/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/sum_invariant.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 13:11:44,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 13:11:44,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 13:11:44,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 13:11:44,942 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-06-05 13:11:44,977 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 13:11:44,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 13:11:44,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 13:11:44,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 13:11:44,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 13:11:44,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 13:11:44,981 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 13:11:44,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 13:11:44,981 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 13:11:44,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 13:11:44,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 13:11:44,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 13:11:44,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 13:11:44,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 13:11:44,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 13:11:44,982 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 13:11:44,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 13:11:44,983 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 13:11:44,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 13:11:44,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 13:11:44,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 13:11:44,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 13:11:44,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 13:11:44,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 13:11:44,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 13:11:44,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 13:11:44,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 13:11:44,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 13:11:44,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 13:11:44,984 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 13:11:44,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 13:11:44,984 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 13:11:44,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 13:11:45,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 13:11:45,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 13:11:45,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 13:11:45,330 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 13:11:45,331 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 13:11:45,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl [2021-06-05 13:11:45,332 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl' [2021-06-05 13:11:45,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 13:11:45,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 13:11:45,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 13:11:45,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 13:11:45,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 13:11:45,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:45" (1/1) ... [2021-06-05 13:11:45,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:45" (1/1) ... [2021-06-05 13:11:45,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 13:11:45,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 13:11:45,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 13:11:45,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 13:11:45,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:45" (1/1) ... [2021-06-05 13:11:45,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:45" (1/1) ... [2021-06-05 13:11:45,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:45" (1/1) ... [2021-06-05 13:11:45,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:45" (1/1) ... [2021-06-05 13:11:45,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:45" (1/1) ... [2021-06-05 13:11:45,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:45" (1/1) ... [2021-06-05 13:11:45,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:45" (1/1) ... [2021-06-05 13:11:45,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 13:11:45,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 13:11:45,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 13:11:45,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 13:11:45,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 13:11:45,479 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 13:11:45,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 13:11:45,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 13:11:45,480 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-06-05 13:11:45,480 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-06-05 13:11:45,480 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-06-05 13:11:45,481 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 13:11:45,598 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 13:11:45,598 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 13:11:45,599 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 01:11:45 BoogieIcfgContainer [2021-06-05 13:11:45,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 13:11:45,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 13:11:45,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 13:11:45,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 13:11:45,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:45" (1/2) ... [2021-06-05 13:11:45,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e527d and model type sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 01:11:45, skipping insertion in model container [2021-06-05 13:11:45,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 01:11:45" (2/2) ... [2021-06-05 13:11:45,606 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_invariant.bpl [2021-06-05 13:11:45,610 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 13:11:45,611 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 13:11:45,611 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 13:11:45,612 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 13:11:45,630 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,631 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,631 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,631 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,631 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,632 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,632 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,632 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,632 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,633 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,633 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,633 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,634 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,634 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,634 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,634 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,635 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,635 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,635 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,635 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,636 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,636 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,636 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,637 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,639 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,642 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,643 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,644 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:45,662 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-06-05 13:11:45,680 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-05 13:11:45,706 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:11:45,706 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:11:45,706 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:11:45,707 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:11:45,707 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:11:45,707 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:11:45,707 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:11:45,707 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 13:11:45,733 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 44 transitions, 156 flow [2021-06-05 13:11:45,899 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1456 states, 1454 states have (on average 3.3177441540577717) internal successors, (4824), 1455 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:45,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 1456 states, 1454 states have (on average 3.3177441540577717) internal successors, (4824), 1455 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:45,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:45,933 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:45,934 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:45,934 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:45,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:45,944 INFO L82 PathProgramCache]: Analyzing trace with hash 376061866, now seen corresponding path program 1 times [2021-06-05 13:11:45,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:45,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257945525] [2021-06-05 13:11:45,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:46,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:46,147 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:46,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257945525] [2021-06-05 13:11:46,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257945525] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:46,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:46,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 13:11:46,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023210769] [2021-06-05 13:11:46,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 13:11:46,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:46,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 13:11:46,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:11:46,170 INFO L87 Difference]: Start difference. First operand has 1456 states, 1454 states have (on average 3.3177441540577717) internal successors, (4824), 1455 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:46,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:46,224 INFO L93 Difference]: Finished difference Result 1331 states and 4324 transitions. [2021-06-05 13:11:46,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 13:11:46,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:46,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:46,255 INFO L225 Difference]: With dead ends: 1331 [2021-06-05 13:11:46,256 INFO L226 Difference]: Without dead ends: 1329 [2021-06-05 13:11:46,260 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:11:46,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-05 13:11:46,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1329. [2021-06-05 13:11:46,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1329 states, 1328 states have (on average 3.2545180722891565) internal successors, (4322), 1328 states have internal predecessors, (4322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 4322 transitions. [2021-06-05 13:11:46,385 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 4322 transitions. Word has length 26 [2021-06-05 13:11:46,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:46,386 INFO L482 AbstractCegarLoop]: Abstraction has 1329 states and 4322 transitions. [2021-06-05 13:11:46,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:46,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 4322 transitions. [2021-06-05 13:11:46,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:46,391 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:46,391 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:46,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 13:11:46,392 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:46,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:46,395 INFO L82 PathProgramCache]: Analyzing trace with hash 2093674476, now seen corresponding path program 1 times [2021-06-05 13:11:46,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:46,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209930801] [2021-06-05 13:11:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:46,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:46,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:46,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209930801] [2021-06-05 13:11:46,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209930801] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:46,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:46,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 13:11:46,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241482044] [2021-06-05 13:11:46,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 13:11:46,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:46,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 13:11:46,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:11:46,459 INFO L87 Difference]: Start difference. First operand 1329 states and 4322 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:46,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:46,480 INFO L93 Difference]: Finished difference Result 1114 states and 3592 transitions. [2021-06-05 13:11:46,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 13:11:46,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:46,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:46,488 INFO L225 Difference]: With dead ends: 1114 [2021-06-05 13:11:46,489 INFO L226 Difference]: Without dead ends: 1114 [2021-06-05 13:11:46,490 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:11:46,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2021-06-05 13:11:46,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1114. [2021-06-05 13:11:46,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1113 states have (on average 3.2273135669362083) internal successors, (3592), 1113 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:46,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 3592 transitions. [2021-06-05 13:11:46,535 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 3592 transitions. Word has length 26 [2021-06-05 13:11:46,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:46,535 INFO L482 AbstractCegarLoop]: Abstraction has 1114 states and 3592 transitions. [2021-06-05 13:11:46,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:46,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 3592 transitions. [2021-06-05 13:11:46,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:46,539 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:46,539 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:46,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 13:11:46,540 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:46,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:46,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1885399720, now seen corresponding path program 1 times [2021-06-05 13:11:46,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:46,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367021438] [2021-06-05 13:11:46,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:46,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:46,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367021438] [2021-06-05 13:11:46,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367021438] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:46,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:46,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 13:11:46,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817864744] [2021-06-05 13:11:46,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 13:11:46,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:46,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 13:11:46,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 13:11:46,659 INFO L87 Difference]: Start difference. First operand 1114 states and 3592 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:46,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:46,793 INFO L93 Difference]: Finished difference Result 1876 states and 5924 transitions. [2021-06-05 13:11:46,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 13:11:46,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:46,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:46,804 INFO L225 Difference]: With dead ends: 1876 [2021-06-05 13:11:46,804 INFO L226 Difference]: Without dead ends: 1614 [2021-06-05 13:11:46,805 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.6ms TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 13:11:46,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2021-06-05 13:11:46,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1614. [2021-06-05 13:11:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1613 states have (on average 3.135771853688779) internal successors, (5058), 1613 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:46,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 5058 transitions. [2021-06-05 13:11:46,865 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 5058 transitions. Word has length 26 [2021-06-05 13:11:46,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:46,866 INFO L482 AbstractCegarLoop]: Abstraction has 1614 states and 5058 transitions. [2021-06-05 13:11:46,866 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:46,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 5058 transitions. [2021-06-05 13:11:46,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:46,872 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:46,872 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:46,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 13:11:46,872 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:46,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:46,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1549982582, now seen corresponding path program 2 times [2021-06-05 13:11:46,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:46,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381240966] [2021-06-05 13:11:46,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:46,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:46,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:46,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381240966] [2021-06-05 13:11:46,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381240966] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:46,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:46,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 13:11:46,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071170810] [2021-06-05 13:11:46,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 13:11:46,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:46,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 13:11:46,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:11:46,987 INFO L87 Difference]: Start difference. First operand 1614 states and 5058 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:47,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:47,145 INFO L93 Difference]: Finished difference Result 1887 states and 5832 transitions. [2021-06-05 13:11:47,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 13:11:47,145 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:47,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:47,154 INFO L225 Difference]: With dead ends: 1887 [2021-06-05 13:11:47,154 INFO L226 Difference]: Without dead ends: 1628 [2021-06-05 13:11:47,155 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:11:47,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2021-06-05 13:11:47,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1508. [2021-06-05 13:11:47,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 1507 states have (on average 3.1360318513603187) internal successors, (4726), 1507 states have internal predecessors, (4726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:47,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 4726 transitions. [2021-06-05 13:11:47,216 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 4726 transitions. Word has length 26 [2021-06-05 13:11:47,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:47,217 INFO L482 AbstractCegarLoop]: Abstraction has 1508 states and 4726 transitions. [2021-06-05 13:11:47,217 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:47,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 4726 transitions. [2021-06-05 13:11:47,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:47,222 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:47,222 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:47,222 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 13:11:47,222 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:47,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:47,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1650467594, now seen corresponding path program 3 times [2021-06-05 13:11:47,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:47,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268754557] [2021-06-05 13:11:47,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:47,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:47,373 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:47,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268754557] [2021-06-05 13:11:47,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268754557] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:47,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:47,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 13:11:47,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489440068] [2021-06-05 13:11:47,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 13:11:47,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:47,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 13:11:47,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:11:47,375 INFO L87 Difference]: Start difference. First operand 1508 states and 4726 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:47,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:47,521 INFO L93 Difference]: Finished difference Result 1901 states and 5814 transitions. [2021-06-05 13:11:47,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 13:11:47,550 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:47,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:47,558 INFO L225 Difference]: With dead ends: 1901 [2021-06-05 13:11:47,559 INFO L226 Difference]: Without dead ends: 1646 [2021-06-05 13:11:47,560 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.3ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:11:47,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2021-06-05 13:11:47,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1458. [2021-06-05 13:11:47,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 3.1256005490734386) internal successors, (4554), 1457 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:47,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 4554 transitions. [2021-06-05 13:11:47,635 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 4554 transitions. Word has length 26 [2021-06-05 13:11:47,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:47,635 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 4554 transitions. [2021-06-05 13:11:47,635 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:47,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 4554 transitions. [2021-06-05 13:11:47,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:47,640 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:47,641 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:47,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 13:11:47,641 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:47,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:47,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1784914708, now seen corresponding path program 4 times [2021-06-05 13:11:47,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:47,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367048471] [2021-06-05 13:11:47,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:47,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:47,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367048471] [2021-06-05 13:11:47,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367048471] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:47,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:47,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:47,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624533349] [2021-06-05 13:11:47,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:47,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:47,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:47,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:47,752 INFO L87 Difference]: Start difference. First operand 1458 states and 4554 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:47,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:47,964 INFO L93 Difference]: Finished difference Result 1678 states and 5178 transitions. [2021-06-05 13:11:47,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:47,965 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:47,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:47,973 INFO L225 Difference]: With dead ends: 1678 [2021-06-05 13:11:47,973 INFO L226 Difference]: Without dead ends: 1484 [2021-06-05 13:11:47,973 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:47,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2021-06-05 13:11:48,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1406. [2021-06-05 13:11:48,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 3.1302491103202845) internal successors, (4398), 1405 states have internal predecessors, (4398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:48,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4398 transitions. [2021-06-05 13:11:48,015 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4398 transitions. Word has length 26 [2021-06-05 13:11:48,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:48,015 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 4398 transitions. [2021-06-05 13:11:48,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:48,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4398 transitions. [2021-06-05 13:11:48,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:48,019 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:48,019 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:48,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 13:11:48,020 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:48,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:48,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1096030702, now seen corresponding path program 5 times [2021-06-05 13:11:48,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:48,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349657306] [2021-06-05 13:11:48,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:48,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:48,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:48,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349657306] [2021-06-05 13:11:48,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349657306] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:48,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:48,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 13:11:48,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791748938] [2021-06-05 13:11:48,101 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 13:11:48,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:48,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 13:11:48,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:11:48,102 INFO L87 Difference]: Start difference. First operand 1406 states and 4398 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:48,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:48,261 INFO L93 Difference]: Finished difference Result 1788 states and 5480 transitions. [2021-06-05 13:11:48,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 13:11:48,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:48,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:48,270 INFO L225 Difference]: With dead ends: 1788 [2021-06-05 13:11:48,270 INFO L226 Difference]: Without dead ends: 1647 [2021-06-05 13:11:48,271 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:11:48,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-06-05 13:11:48,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1463. [2021-06-05 13:11:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1462 states have (on average 3.1299589603283176) internal successors, (4576), 1462 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:48,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 4576 transitions. [2021-06-05 13:11:48,344 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 4576 transitions. Word has length 26 [2021-06-05 13:11:48,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:48,345 INFO L482 AbstractCegarLoop]: Abstraction has 1463 states and 4576 transitions. [2021-06-05 13:11:48,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:48,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 4576 transitions. [2021-06-05 13:11:48,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:48,350 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:48,350 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:48,350 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 13:11:48,350 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:48,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:48,351 INFO L82 PathProgramCache]: Analyzing trace with hash 662642804, now seen corresponding path program 6 times [2021-06-05 13:11:48,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:48,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119851232] [2021-06-05 13:11:48,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:48,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:48,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:48,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119851232] [2021-06-05 13:11:48,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119851232] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:48,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:48,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:48,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990388342] [2021-06-05 13:11:48,462 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:48,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:48,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:48,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:48,463 INFO L87 Difference]: Start difference. First operand 1463 states and 4576 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:48,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:48,664 INFO L93 Difference]: Finished difference Result 1778 states and 5460 transitions. [2021-06-05 13:11:48,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:48,664 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:48,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:48,673 INFO L225 Difference]: With dead ends: 1778 [2021-06-05 13:11:48,673 INFO L226 Difference]: Without dead ends: 1649 [2021-06-05 13:11:48,674 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:48,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-06-05 13:11:48,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1488. [2021-06-05 13:11:48,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 3.129791526563551) internal successors, (4654), 1487 states have internal predecessors, (4654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:48,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 4654 transitions. [2021-06-05 13:11:48,736 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 4654 transitions. Word has length 26 [2021-06-05 13:11:48,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:48,736 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 4654 transitions. [2021-06-05 13:11:48,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:48,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 4654 transitions. [2021-06-05 13:11:48,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:48,741 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:48,741 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:48,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 13:11:48,741 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:48,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:48,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1532087412, now seen corresponding path program 7 times [2021-06-05 13:11:48,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:48,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824061184] [2021-06-05 13:11:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:48,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:48,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:48,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824061184] [2021-06-05 13:11:48,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824061184] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:48,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:48,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:48,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096893977] [2021-06-05 13:11:48,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:48,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:48,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:48,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:48,854 INFO L87 Difference]: Start difference. First operand 1488 states and 4654 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:49,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:49,052 INFO L93 Difference]: Finished difference Result 1806 states and 5565 transitions. [2021-06-05 13:11:49,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:49,053 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:49,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:49,062 INFO L225 Difference]: With dead ends: 1806 [2021-06-05 13:11:49,062 INFO L226 Difference]: Without dead ends: 1647 [2021-06-05 13:11:49,062 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:49,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-06-05 13:11:49,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1509. [2021-06-05 13:11:49,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 3.126657824933687) internal successors, (4715), 1508 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:49,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 4715 transitions. [2021-06-05 13:11:49,110 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 4715 transitions. Word has length 26 [2021-06-05 13:11:49,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:49,110 INFO L482 AbstractCegarLoop]: Abstraction has 1509 states and 4715 transitions. [2021-06-05 13:11:49,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:49,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 4715 transitions. [2021-06-05 13:11:49,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:49,114 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:49,115 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:49,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 13:11:49,115 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:49,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:49,115 INFO L82 PathProgramCache]: Analyzing trace with hash 63376182, now seen corresponding path program 8 times [2021-06-05 13:11:49,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:49,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102436872] [2021-06-05 13:11:49,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:49,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:49,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:49,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102436872] [2021-06-05 13:11:49,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102436872] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:49,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:49,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:49,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224061299] [2021-06-05 13:11:49,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:49,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:49,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:49,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:49,202 INFO L87 Difference]: Start difference. First operand 1509 states and 4715 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:49,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:49,408 INFO L93 Difference]: Finished difference Result 1852 states and 5672 transitions. [2021-06-05 13:11:49,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:49,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:49,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:49,417 INFO L225 Difference]: With dead ends: 1852 [2021-06-05 13:11:49,418 INFO L226 Difference]: Without dead ends: 1713 [2021-06-05 13:11:49,418 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:49,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2021-06-05 13:11:49,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1499. [2021-06-05 13:11:49,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1498 states have (on average 3.1275033377837116) internal successors, (4685), 1498 states have internal predecessors, (4685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:49,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 4685 transitions. [2021-06-05 13:11:49,461 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 4685 transitions. Word has length 26 [2021-06-05 13:11:49,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:49,461 INFO L482 AbstractCegarLoop]: Abstraction has 1499 states and 4685 transitions. [2021-06-05 13:11:49,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:49,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 4685 transitions. [2021-06-05 13:11:49,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:49,465 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:49,466 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:49,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 13:11:49,466 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:49,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:49,466 INFO L82 PathProgramCache]: Analyzing trace with hash 53973816, now seen corresponding path program 9 times [2021-06-05 13:11:49,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:49,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811115073] [2021-06-05 13:11:49,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:49,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:49,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:49,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811115073] [2021-06-05 13:11:49,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811115073] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:49,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:49,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 13:11:49,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453919291] [2021-06-05 13:11:49,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 13:11:49,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:49,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 13:11:49,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:11:49,558 INFO L87 Difference]: Start difference. First operand 1499 states and 4685 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:49,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:49,709 INFO L93 Difference]: Finished difference Result 1849 states and 5664 transitions. [2021-06-05 13:11:49,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 13:11:49,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:49,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:49,718 INFO L225 Difference]: With dead ends: 1849 [2021-06-05 13:11:49,718 INFO L226 Difference]: Without dead ends: 1708 [2021-06-05 13:11:49,718 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.9ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:11:49,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2021-06-05 13:11:49,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1525. [2021-06-05 13:11:49,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 3.1266404199475066) internal successors, (4765), 1524 states have internal predecessors, (4765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:49,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 4765 transitions. [2021-06-05 13:11:49,759 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 4765 transitions. Word has length 26 [2021-06-05 13:11:49,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:49,759 INFO L482 AbstractCegarLoop]: Abstraction has 1525 states and 4765 transitions. [2021-06-05 13:11:49,759 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:49,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 4765 transitions. [2021-06-05 13:11:49,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:49,763 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:49,763 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:49,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 13:11:49,764 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:49,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:49,764 INFO L82 PathProgramCache]: Analyzing trace with hash 923418424, now seen corresponding path program 10 times [2021-06-05 13:11:49,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:49,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527108571] [2021-06-05 13:11:49,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:49,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:49,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527108571] [2021-06-05 13:11:49,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527108571] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:49,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:49,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:49,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034266605] [2021-06-05 13:11:49,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:49,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:49,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:49,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:49,845 INFO L87 Difference]: Start difference. First operand 1525 states and 4765 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:50,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:50,023 INFO L93 Difference]: Finished difference Result 1932 states and 5906 transitions. [2021-06-05 13:11:50,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:50,024 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:50,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:50,029 INFO L225 Difference]: With dead ends: 1932 [2021-06-05 13:11:50,030 INFO L226 Difference]: Without dead ends: 1665 [2021-06-05 13:11:50,030 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:50,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2021-06-05 13:11:50,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1415. [2021-06-05 13:11:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1414 states have (on average 3.0912305516265914) internal successors, (4371), 1414 states have internal predecessors, (4371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 4371 transitions. [2021-06-05 13:11:50,069 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 4371 transitions. Word has length 26 [2021-06-05 13:11:50,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:50,069 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 4371 transitions. [2021-06-05 13:11:50,069 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:50,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 4371 transitions. [2021-06-05 13:11:50,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:50,072 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:50,072 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:50,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 13:11:50,073 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:50,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:50,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1663766954, now seen corresponding path program 11 times [2021-06-05 13:11:50,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:50,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982376085] [2021-06-05 13:11:50,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:50,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:50,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982376085] [2021-06-05 13:11:50,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982376085] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:50,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:50,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:50,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491929457] [2021-06-05 13:11:50,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:50,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:50,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:50,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:50,154 INFO L87 Difference]: Start difference. First operand 1415 states and 4371 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:50,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:50,330 INFO L93 Difference]: Finished difference Result 1661 states and 5048 transitions. [2021-06-05 13:11:50,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:50,330 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:50,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:50,339 INFO L225 Difference]: With dead ends: 1661 [2021-06-05 13:11:50,340 INFO L226 Difference]: Without dead ends: 1528 [2021-06-05 13:11:50,340 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:50,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-06-05 13:11:50,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1405. [2021-06-05 13:11:50,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1404 states have (on average 3.0868945868945867) internal successors, (4334), 1404 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:50,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 4334 transitions. [2021-06-05 13:11:50,380 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 4334 transitions. Word has length 26 [2021-06-05 13:11:50,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:50,380 INFO L482 AbstractCegarLoop]: Abstraction has 1405 states and 4334 transitions. [2021-06-05 13:11:50,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:50,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 4334 transitions. [2021-06-05 13:11:50,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:50,384 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:50,384 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:50,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 13:11:50,384 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:50,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:50,385 INFO L82 PathProgramCache]: Analyzing trace with hash -794322346, now seen corresponding path program 12 times [2021-06-05 13:11:50,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:50,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242832955] [2021-06-05 13:11:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:50,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:50,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242832955] [2021-06-05 13:11:50,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242832955] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:50,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:50,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:50,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578631037] [2021-06-05 13:11:50,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:50,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:50,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:50,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:50,473 INFO L87 Difference]: Start difference. First operand 1405 states and 4334 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:50,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:50,662 INFO L93 Difference]: Finished difference Result 1871 states and 5674 transitions. [2021-06-05 13:11:50,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:50,662 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:50,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:50,667 INFO L225 Difference]: With dead ends: 1871 [2021-06-05 13:11:50,667 INFO L226 Difference]: Without dead ends: 1726 [2021-06-05 13:11:50,668 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:50,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-06-05 13:11:50,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1433. [2021-06-05 13:11:50,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1432 states have (on average 3.0858938547486034) internal successors, (4419), 1432 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:50,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 4419 transitions. [2021-06-05 13:11:50,704 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 4419 transitions. Word has length 26 [2021-06-05 13:11:50,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:50,704 INFO L482 AbstractCegarLoop]: Abstraction has 1433 states and 4419 transitions. [2021-06-05 13:11:50,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:50,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 4419 transitions. [2021-06-05 13:11:50,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:50,707 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:50,707 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:50,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 13:11:50,708 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:50,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:50,708 INFO L82 PathProgramCache]: Analyzing trace with hash 2045087292, now seen corresponding path program 13 times [2021-06-05 13:11:50,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:50,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456894453] [2021-06-05 13:11:50,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:50,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:50,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:50,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456894453] [2021-06-05 13:11:50,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456894453] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:50,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:50,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:50,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375981017] [2021-06-05 13:11:50,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:50,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:50,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:50,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:50,799 INFO L87 Difference]: Start difference. First operand 1433 states and 4419 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:50,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:50,989 INFO L93 Difference]: Finished difference Result 1746 states and 5285 transitions. [2021-06-05 13:11:50,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:50,990 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:50,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:50,993 INFO L225 Difference]: With dead ends: 1746 [2021-06-05 13:11:50,993 INFO L226 Difference]: Without dead ends: 1561 [2021-06-05 13:11:50,994 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:51,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-06-05 13:11:51,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1389. [2021-06-05 13:11:51,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 1388 states have (on average 3.0871757925072045) internal successors, (4285), 1388 states have internal predecessors, (4285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:51,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 4285 transitions. [2021-06-05 13:11:51,027 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 4285 transitions. Word has length 26 [2021-06-05 13:11:51,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:51,028 INFO L482 AbstractCegarLoop]: Abstraction has 1389 states and 4285 transitions. [2021-06-05 13:11:51,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:51,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 4285 transitions. [2021-06-05 13:11:51,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:51,031 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:51,031 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:51,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 13:11:51,031 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:51,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:51,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1140197304, now seen corresponding path program 14 times [2021-06-05 13:11:51,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:51,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110652021] [2021-06-05 13:11:51,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:51,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:51,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:51,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110652021] [2021-06-05 13:11:51,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110652021] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:51,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:51,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:51,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358817954] [2021-06-05 13:11:51,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:51,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:51,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:51,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:51,110 INFO L87 Difference]: Start difference. First operand 1389 states and 4285 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:51,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:51,275 INFO L93 Difference]: Finished difference Result 1686 states and 5109 transitions. [2021-06-05 13:11:51,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:51,275 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:51,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:51,279 INFO L225 Difference]: With dead ends: 1686 [2021-06-05 13:11:51,279 INFO L226 Difference]: Without dead ends: 1511 [2021-06-05 13:11:51,280 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:51,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2021-06-05 13:11:51,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1339. [2021-06-05 13:11:51,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1338 states have (on average 3.0904334828101643) internal successors, (4135), 1338 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:51,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 4135 transitions. [2021-06-05 13:11:51,314 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 4135 transitions. Word has length 26 [2021-06-05 13:11:51,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:51,314 INFO L482 AbstractCegarLoop]: Abstraction has 1339 states and 4135 transitions. [2021-06-05 13:11:51,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:51,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 4135 transitions. [2021-06-05 13:11:51,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:51,317 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:51,317 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:51,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 13:11:51,318 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:51,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:51,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1396096486, now seen corresponding path program 15 times [2021-06-05 13:11:51,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:51,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916451474] [2021-06-05 13:11:51,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:51,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:51,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:51,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916451474] [2021-06-05 13:11:51,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916451474] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:51,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:51,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:51,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288762132] [2021-06-05 13:11:51,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:51,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:51,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:51,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:51,395 INFO L87 Difference]: Start difference. First operand 1339 states and 4135 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:51,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:51,565 INFO L93 Difference]: Finished difference Result 1627 states and 4941 transitions. [2021-06-05 13:11:51,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:51,565 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:51,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:51,570 INFO L225 Difference]: With dead ends: 1627 [2021-06-05 13:11:51,570 INFO L226 Difference]: Without dead ends: 1462 [2021-06-05 13:11:51,571 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:51,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-06-05 13:11:51,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1322. [2021-06-05 13:11:51,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 1321 states have (on average 3.093111279333838) internal successors, (4086), 1321 states have internal predecessors, (4086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:51,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 4086 transitions. [2021-06-05 13:11:51,604 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 4086 transitions. Word has length 26 [2021-06-05 13:11:51,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:51,604 INFO L482 AbstractCegarLoop]: Abstraction has 1322 states and 4086 transitions. [2021-06-05 13:11:51,604 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:51,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 4086 transitions. [2021-06-05 13:11:51,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:51,607 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:51,607 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:51,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 13:11:51,607 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:51,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:51,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1995363108, now seen corresponding path program 16 times [2021-06-05 13:11:51,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:51,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349555835] [2021-06-05 13:11:51,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:51,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:51,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:51,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349555835] [2021-06-05 13:11:51,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349555835] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:51,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:51,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:51,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700520271] [2021-06-05 13:11:51,679 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:51,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:51,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:51,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:51,679 INFO L87 Difference]: Start difference. First operand 1322 states and 4086 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:51,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:51,863 INFO L93 Difference]: Finished difference Result 1728 states and 5256 transitions. [2021-06-05 13:11:51,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:51,863 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:51,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:51,868 INFO L225 Difference]: With dead ends: 1728 [2021-06-05 13:11:51,868 INFO L226 Difference]: Without dead ends: 1573 [2021-06-05 13:11:51,869 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:51,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-06-05 13:11:51,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1301. [2021-06-05 13:11:51,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1300 states have (on average 3.0930769230769233) internal successors, (4021), 1300 states have internal predecessors, (4021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:51,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 4021 transitions. [2021-06-05 13:11:51,902 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 4021 transitions. Word has length 26 [2021-06-05 13:11:51,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:51,902 INFO L482 AbstractCegarLoop]: Abstraction has 1301 states and 4021 transitions. [2021-06-05 13:11:51,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:51,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 4021 transitions. [2021-06-05 13:11:51,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:51,904 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:51,904 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:51,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 13:11:51,905 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:51,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:51,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1729596350, now seen corresponding path program 17 times [2021-06-05 13:11:51,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:51,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067540225] [2021-06-05 13:11:51,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:51,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:51,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067540225] [2021-06-05 13:11:51,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067540225] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:51,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:51,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:51,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989129786] [2021-06-05 13:11:51,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:51,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:51,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:51,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:51,983 INFO L87 Difference]: Start difference. First operand 1301 states and 4021 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:52,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:52,174 INFO L93 Difference]: Finished difference Result 1527 states and 4646 transitions. [2021-06-05 13:11:52,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:52,174 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:52,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:52,178 INFO L225 Difference]: With dead ends: 1527 [2021-06-05 13:11:52,178 INFO L226 Difference]: Without dead ends: 1316 [2021-06-05 13:11:52,178 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-06-05 13:11:52,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1138. [2021-06-05 13:11:52,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1137 states have (on average 3.1213720316622693) internal successors, (3549), 1137 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:52,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 3549 transitions. [2021-06-05 13:11:52,205 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 3549 transitions. Word has length 26 [2021-06-05 13:11:52,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:52,205 INFO L482 AbstractCegarLoop]: Abstraction has 1138 states and 3549 transitions. [2021-06-05 13:11:52,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:52,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 3549 transitions. [2021-06-05 13:11:52,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:52,208 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:52,208 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:52,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 13:11:52,208 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:52,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:52,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1402742104, now seen corresponding path program 18 times [2021-06-05 13:11:52,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:52,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726189632] [2021-06-05 13:11:52,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:52,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:52,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726189632] [2021-06-05 13:11:52,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726189632] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:52,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:52,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 13:11:52,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455281441] [2021-06-05 13:11:52,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 13:11:52,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:52,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 13:11:52,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:11:52,276 INFO L87 Difference]: Start difference. First operand 1138 states and 3549 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:52,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:52,421 INFO L93 Difference]: Finished difference Result 1698 states and 5175 transitions. [2021-06-05 13:11:52,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 13:11:52,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:52,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:52,426 INFO L225 Difference]: With dead ends: 1698 [2021-06-05 13:11:52,426 INFO L226 Difference]: Without dead ends: 1446 [2021-06-05 13:11:52,426 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:11:52,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-06-05 13:11:52,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1252. [2021-06-05 13:11:52,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 3.079136690647482) internal successors, (3852), 1251 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:52,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3852 transitions. [2021-06-05 13:11:52,456 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3852 transitions. Word has length 26 [2021-06-05 13:11:52,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:52,456 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3852 transitions. [2021-06-05 13:11:52,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:52,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3852 transitions. [2021-06-05 13:11:52,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:52,458 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:52,458 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:52,459 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 13:11:52,459 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:52,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:52,459 INFO L82 PathProgramCache]: Analyzing trace with hash 543157110, now seen corresponding path program 19 times [2021-06-05 13:11:52,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:52,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677531578] [2021-06-05 13:11:52,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:52,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:52,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:52,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677531578] [2021-06-05 13:11:52,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677531578] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:52,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:52,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:52,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364802744] [2021-06-05 13:11:52,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:52,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:52,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:52,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:52,531 INFO L87 Difference]: Start difference. First operand 1252 states and 3852 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:52,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:52,694 INFO L93 Difference]: Finished difference Result 1559 states and 4705 transitions. [2021-06-05 13:11:52,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:52,694 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:52,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:52,697 INFO L225 Difference]: With dead ends: 1559 [2021-06-05 13:11:52,698 INFO L226 Difference]: Without dead ends: 1310 [2021-06-05 13:11:52,698 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:52,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-06-05 13:11:52,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1106. [2021-06-05 13:11:52,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1105 states have (on average 3.08868778280543) internal successors, (3413), 1105 states have internal predecessors, (3413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:52,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 3413 transitions. [2021-06-05 13:11:52,723 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 3413 transitions. Word has length 26 [2021-06-05 13:11:52,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:52,723 INFO L482 AbstractCegarLoop]: Abstraction has 1106 states and 3413 transitions. [2021-06-05 13:11:52,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:52,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 3413 transitions. [2021-06-05 13:11:52,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:52,725 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:52,725 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:52,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 13:11:52,725 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:52,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:52,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1637674230, now seen corresponding path program 20 times [2021-06-05 13:11:52,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:52,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095367912] [2021-06-05 13:11:52,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:52,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:52,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:52,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095367912] [2021-06-05 13:11:52,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095367912] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:52,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:52,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:52,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924010443] [2021-06-05 13:11:52,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:52,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:52,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:52,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:52,795 INFO L87 Difference]: Start difference. First operand 1106 states and 3413 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:52,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:52,980 INFO L93 Difference]: Finished difference Result 1455 states and 4380 transitions. [2021-06-05 13:11:52,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:52,981 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:52,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:52,983 INFO L225 Difference]: With dead ends: 1455 [2021-06-05 13:11:52,984 INFO L226 Difference]: Without dead ends: 1268 [2021-06-05 13:11:52,984 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:52,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2021-06-05 13:11:53,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1116. [2021-06-05 13:11:53,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1115 states have (on average 3.077130044843049) internal successors, (3431), 1115 states have internal predecessors, (3431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:53,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 3431 transitions. [2021-06-05 13:11:53,008 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 3431 transitions. Word has length 26 [2021-06-05 13:11:53,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:53,008 INFO L482 AbstractCegarLoop]: Abstraction has 1116 states and 3431 transitions. [2021-06-05 13:11:53,008 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:53,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 3431 transitions. [2021-06-05 13:11:53,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:53,010 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:53,011 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:53,011 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 13:11:53,011 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:53,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:53,011 INFO L82 PathProgramCache]: Analyzing trace with hash 778089236, now seen corresponding path program 21 times [2021-06-05 13:11:53,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:53,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697688919] [2021-06-05 13:11:53,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:53,094 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:53,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697688919] [2021-06-05 13:11:53,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697688919] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:53,094 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:53,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:11:53,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289735437] [2021-06-05 13:11:53,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:11:53,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:53,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:11:53,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:53,095 INFO L87 Difference]: Start difference. First operand 1116 states and 3431 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:53,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:53,277 INFO L93 Difference]: Finished difference Result 1381 states and 4160 transitions. [2021-06-05 13:11:53,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:11:53,278 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:53,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:53,280 INFO L225 Difference]: With dead ends: 1381 [2021-06-05 13:11:53,280 INFO L226 Difference]: Without dead ends: 1226 [2021-06-05 13:11:53,281 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:53,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-06-05 13:11:53,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1090. [2021-06-05 13:11:53,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 1089 states have (on average 3.0899908172635446) internal successors, (3365), 1089 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:53,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 3365 transitions. [2021-06-05 13:11:53,314 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 3365 transitions. Word has length 26 [2021-06-05 13:11:53,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:53,314 INFO L482 AbstractCegarLoop]: Abstraction has 1090 states and 3365 transitions. [2021-06-05 13:11:53,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:53,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 3365 transitions. [2021-06-05 13:11:53,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:53,316 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:53,316 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:53,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 13:11:53,316 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:53,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:53,317 INFO L82 PathProgramCache]: Analyzing trace with hash -2102856174, now seen corresponding path program 22 times [2021-06-05 13:11:53,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:53,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102508465] [2021-06-05 13:11:53,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:53,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:53,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102508465] [2021-06-05 13:11:53,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102508465] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:53,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:53,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:53,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460498808] [2021-06-05 13:11:53,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:53,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:53,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:53,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:53,397 INFO L87 Difference]: Start difference. First operand 1090 states and 3365 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:53,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:53,554 INFO L93 Difference]: Finished difference Result 1426 states and 4315 transitions. [2021-06-05 13:11:53,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:53,555 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:53,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:53,558 INFO L225 Difference]: With dead ends: 1426 [2021-06-05 13:11:53,558 INFO L226 Difference]: Without dead ends: 1303 [2021-06-05 13:11:53,558 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:53,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-06-05 13:11:53,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1149. [2021-06-05 13:11:53,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1148 states have (on average 3.0888501742160277) internal successors, (3546), 1148 states have internal predecessors, (3546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:53,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 3546 transitions. [2021-06-05 13:11:53,587 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 3546 transitions. Word has length 26 [2021-06-05 13:11:53,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:53,587 INFO L482 AbstractCegarLoop]: Abstraction has 1149 states and 3546 transitions. [2021-06-05 13:11:53,587 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:53,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 3546 transitions. [2021-06-05 13:11:53,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:53,589 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:53,589 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:53,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 13:11:53,590 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:53,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:53,590 INFO L82 PathProgramCache]: Analyzing trace with hash -344182668, now seen corresponding path program 23 times [2021-06-05 13:11:53,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:53,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598681880] [2021-06-05 13:11:53,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:53,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:53,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:53,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598681880] [2021-06-05 13:11:53,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598681880] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:53,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:53,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:11:53,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413526605] [2021-06-05 13:11:53,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:11:53,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:53,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:11:53,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:53,674 INFO L87 Difference]: Start difference. First operand 1149 states and 3546 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:53,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:53,871 INFO L93 Difference]: Finished difference Result 1438 states and 4359 transitions. [2021-06-05 13:11:53,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:11:53,872 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:53,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:53,874 INFO L225 Difference]: With dead ends: 1438 [2021-06-05 13:11:53,874 INFO L226 Difference]: Without dead ends: 1327 [2021-06-05 13:11:53,874 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:53,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2021-06-05 13:11:53,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1164. [2021-06-05 13:11:53,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 1163 states have (on average 3.0885640584694753) internal successors, (3592), 1163 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 3592 transitions. [2021-06-05 13:11:53,899 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 3592 transitions. Word has length 26 [2021-06-05 13:11:53,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:53,899 INFO L482 AbstractCegarLoop]: Abstraction has 1164 states and 3592 transitions. [2021-06-05 13:11:53,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:53,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 3592 transitions. [2021-06-05 13:11:53,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:53,902 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:53,902 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:53,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 13:11:53,902 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:53,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:53,902 INFO L82 PathProgramCache]: Analyzing trace with hash 525261940, now seen corresponding path program 24 times [2021-06-05 13:11:53,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:53,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525852108] [2021-06-05 13:11:53,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:53,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:53,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:53,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525852108] [2021-06-05 13:11:53,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525852108] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:53,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:53,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:11:53,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596191920] [2021-06-05 13:11:53,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:11:53,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:53,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:11:53,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:53,984 INFO L87 Difference]: Start difference. First operand 1164 states and 3592 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:54,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:54,177 INFO L93 Difference]: Finished difference Result 1343 states and 4063 transitions. [2021-06-05 13:11:54,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:11:54,177 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:54,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:54,179 INFO L225 Difference]: With dead ends: 1343 [2021-06-05 13:11:54,179 INFO L226 Difference]: Without dead ends: 1209 [2021-06-05 13:11:54,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:54,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2021-06-05 13:11:54,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1153. [2021-06-05 13:11:54,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1152 states have (on average 3.087673611111111) internal successors, (3557), 1152 states have internal predecessors, (3557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:54,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 3557 transitions. [2021-06-05 13:11:54,199 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 3557 transitions. Word has length 26 [2021-06-05 13:11:54,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:54,199 INFO L482 AbstractCegarLoop]: Abstraction has 1153 states and 3557 transitions. [2021-06-05 13:11:54,199 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:54,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 3557 transitions. [2021-06-05 13:11:54,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:54,201 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:54,201 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:54,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 13:11:54,201 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:54,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:54,202 INFO L82 PathProgramCache]: Analyzing trace with hash -943449290, now seen corresponding path program 25 times [2021-06-05 13:11:54,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:54,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160007196] [2021-06-05 13:11:54,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:54,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:54,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:54,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160007196] [2021-06-05 13:11:54,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160007196] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:54,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:54,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:11:54,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577751494] [2021-06-05 13:11:54,280 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:11:54,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:54,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:11:54,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:54,280 INFO L87 Difference]: Start difference. First operand 1153 states and 3557 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:54,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:54,474 INFO L93 Difference]: Finished difference Result 1431 states and 4320 transitions. [2021-06-05 13:11:54,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:11:54,474 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:54,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:54,476 INFO L225 Difference]: With dead ends: 1431 [2021-06-05 13:11:54,476 INFO L226 Difference]: Without dead ends: 1310 [2021-06-05 13:11:54,476 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:54,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-06-05 13:11:54,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1143. [2021-06-05 13:11:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 3.088441330998249) internal successors, (3527), 1142 states have internal predecessors, (3527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:54,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3527 transitions. [2021-06-05 13:11:54,496 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3527 transitions. Word has length 26 [2021-06-05 13:11:54,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:54,496 INFO L482 AbstractCegarLoop]: Abstraction has 1143 states and 3527 transitions. [2021-06-05 13:11:54,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:54,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3527 transitions. [2021-06-05 13:11:54,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:54,498 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:54,498 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:54,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 13:11:54,498 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:54,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:54,498 INFO L82 PathProgramCache]: Analyzing trace with hash -952851656, now seen corresponding path program 26 times [2021-06-05 13:11:54,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:54,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383263994] [2021-06-05 13:11:54,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:54,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:54,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:54,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383263994] [2021-06-05 13:11:54,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383263994] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:54,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:54,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:54,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748392244] [2021-06-05 13:11:54,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:54,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:54,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:54,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:54,574 INFO L87 Difference]: Start difference. First operand 1143 states and 3527 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:54,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:54,728 INFO L93 Difference]: Finished difference Result 1389 states and 4203 transitions. [2021-06-05 13:11:54,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:54,729 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:54,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:54,730 INFO L225 Difference]: With dead ends: 1389 [2021-06-05 13:11:54,730 INFO L226 Difference]: Without dead ends: 1278 [2021-06-05 13:11:54,731 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:54,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-06-05 13:11:54,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1180. [2021-06-05 13:11:54,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1179 states have (on average 3.082273112807464) internal successors, (3634), 1179 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:54,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3634 transitions. [2021-06-05 13:11:54,754 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3634 transitions. Word has length 26 [2021-06-05 13:11:54,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:54,755 INFO L482 AbstractCegarLoop]: Abstraction has 1180 states and 3634 transitions. [2021-06-05 13:11:54,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:54,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3634 transitions. [2021-06-05 13:11:54,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:54,757 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:54,757 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:54,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 13:11:54,757 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:54,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:54,757 INFO L82 PathProgramCache]: Analyzing trace with hash -83407048, now seen corresponding path program 27 times [2021-06-05 13:11:54,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:54,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016855152] [2021-06-05 13:11:54,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:54,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:54,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016855152] [2021-06-05 13:11:54,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016855152] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:54,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:54,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:11:54,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144213219] [2021-06-05 13:11:54,836 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:11:54,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:54,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:11:54,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:54,836 INFO L87 Difference]: Start difference. First operand 1180 states and 3634 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:55,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:55,032 INFO L93 Difference]: Finished difference Result 1506 states and 4529 transitions. [2021-06-05 13:11:55,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:11:55,033 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:55,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:55,035 INFO L225 Difference]: With dead ends: 1506 [2021-06-05 13:11:55,035 INFO L226 Difference]: Without dead ends: 1281 [2021-06-05 13:11:55,035 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:55,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-06-05 13:11:55,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1143. [2021-06-05 13:11:55,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 3.0674255691768826) internal successors, (3503), 1142 states have internal predecessors, (3503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:55,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3503 transitions. [2021-06-05 13:11:55,058 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3503 transitions. Word has length 26 [2021-06-05 13:11:55,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:55,058 INFO L482 AbstractCegarLoop]: Abstraction has 1143 states and 3503 transitions. [2021-06-05 13:11:55,058 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:55,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3503 transitions. [2021-06-05 13:11:55,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:55,060 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:55,060 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:55,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 13:11:55,060 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:55,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:55,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1624374870, now seen corresponding path program 28 times [2021-06-05 13:11:55,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:55,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169271465] [2021-06-05 13:11:55,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:55,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:55,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:55,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169271465] [2021-06-05 13:11:55,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169271465] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:55,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:55,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:11:55,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724098019] [2021-06-05 13:11:55,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:11:55,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:55,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:11:55,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:55,149 INFO L87 Difference]: Start difference. First operand 1143 states and 3503 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:55,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:55,354 INFO L93 Difference]: Finished difference Result 1303 states and 3927 transitions. [2021-06-05 13:11:55,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:11:55,355 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:55,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:55,357 INFO L225 Difference]: With dead ends: 1303 [2021-06-05 13:11:55,357 INFO L226 Difference]: Without dead ends: 1192 [2021-06-05 13:11:55,358 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:55,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2021-06-05 13:11:55,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1154. [2021-06-05 13:11:55,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 3.065047701647875) internal successors, (3534), 1153 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:55,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 3534 transitions. [2021-06-05 13:11:55,379 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 3534 transitions. Word has length 26 [2021-06-05 13:11:55,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:55,379 INFO L482 AbstractCegarLoop]: Abstraction has 1154 states and 3534 transitions. [2021-06-05 13:11:55,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:55,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 3534 transitions. [2021-06-05 13:11:55,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:55,382 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:55,382 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:55,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 13:11:55,382 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:55,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:55,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1801147818, now seen corresponding path program 29 times [2021-06-05 13:11:55,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:55,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768246101] [2021-06-05 13:11:55,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:55,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:55,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768246101] [2021-06-05 13:11:55,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768246101] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:55,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:55,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:11:55,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553397052] [2021-06-05 13:11:55,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:11:55,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:55,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:11:55,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:55,477 INFO L87 Difference]: Start difference. First operand 1154 states and 3534 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:55,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:55,680 INFO L93 Difference]: Finished difference Result 1496 states and 4503 transitions. [2021-06-05 13:11:55,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:11:55,680 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:55,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:55,683 INFO L225 Difference]: With dead ends: 1496 [2021-06-05 13:11:55,683 INFO L226 Difference]: Without dead ends: 1369 [2021-06-05 13:11:55,683 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:55,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2021-06-05 13:11:55,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1143. [2021-06-05 13:11:55,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 3.0656742556917687) internal successors, (3501), 1142 states have internal predecessors, (3501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:55,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3501 transitions. [2021-06-05 13:11:55,708 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3501 transitions. Word has length 26 [2021-06-05 13:11:55,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:55,708 INFO L482 AbstractCegarLoop]: Abstraction has 1143 states and 3501 transitions. [2021-06-05 13:11:55,708 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:55,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3501 transitions. [2021-06-05 13:11:55,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:55,710 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:55,710 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:55,711 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 13:11:55,711 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:55,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:55,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1038261820, now seen corresponding path program 30 times [2021-06-05 13:11:55,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:55,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552836583] [2021-06-05 13:11:55,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:55,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:55,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:55,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552836583] [2021-06-05 13:11:55,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552836583] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:55,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:55,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:11:55,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778429521] [2021-06-05 13:11:55,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:11:55,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:55,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:11:55,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:55,802 INFO L87 Difference]: Start difference. First operand 1143 states and 3501 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:56,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:56,023 INFO L93 Difference]: Finished difference Result 1406 states and 4227 transitions. [2021-06-05 13:11:56,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:11:56,024 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:56,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:56,026 INFO L225 Difference]: With dead ends: 1406 [2021-06-05 13:11:56,026 INFO L226 Difference]: Without dead ends: 1239 [2021-06-05 13:11:56,026 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:56,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-06-05 13:11:56,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1113. [2021-06-05 13:11:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1112 states have (on average 3.085431654676259) internal successors, (3431), 1112 states have internal predecessors, (3431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:56,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 3431 transitions. [2021-06-05 13:11:56,045 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 3431 transitions. Word has length 26 [2021-06-05 13:11:56,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:56,046 INFO L482 AbstractCegarLoop]: Abstraction has 1113 states and 3431 transitions. [2021-06-05 13:11:56,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:56,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 3431 transitions. [2021-06-05 13:11:56,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:56,048 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:56,048 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:56,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 13:11:56,048 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:56,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:56,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1327824616, now seen corresponding path program 31 times [2021-06-05 13:11:56,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:56,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537044069] [2021-06-05 13:11:56,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:56,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:56,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537044069] [2021-06-05 13:11:56,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537044069] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:56,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:56,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 13:11:56,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444632577] [2021-06-05 13:11:56,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 13:11:56,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:56,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 13:11:56,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:11:56,101 INFO L87 Difference]: Start difference. First operand 1113 states and 3431 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:56,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:56,244 INFO L93 Difference]: Finished difference Result 1453 states and 4359 transitions. [2021-06-05 13:11:56,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 13:11:56,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:56,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:56,247 INFO L225 Difference]: With dead ends: 1453 [2021-06-05 13:11:56,247 INFO L226 Difference]: Without dead ends: 1292 [2021-06-05 13:11:56,247 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:11:56,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-06-05 13:11:56,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1206. [2021-06-05 13:11:56,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1205 states have (on average 3.0539419087136928) internal successors, (3680), 1205 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:56,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 3680 transitions. [2021-06-05 13:11:56,269 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 3680 transitions. Word has length 26 [2021-06-05 13:11:56,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:56,270 INFO L482 AbstractCegarLoop]: Abstraction has 1206 states and 3680 transitions. [2021-06-05 13:11:56,270 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:56,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 3680 transitions. [2021-06-05 13:11:56,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:56,272 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:56,273 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:56,273 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 13:11:56,273 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:56,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:56,273 INFO L82 PathProgramCache]: Analyzing trace with hash 2107557686, now seen corresponding path program 32 times [2021-06-05 13:11:56,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:56,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16153509] [2021-06-05 13:11:56,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:56,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:56,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:56,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16153509] [2021-06-05 13:11:56,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16153509] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:56,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:56,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:56,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823671701] [2021-06-05 13:11:56,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:56,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:56,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:56,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:56,342 INFO L87 Difference]: Start difference. First operand 1206 states and 3680 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:56,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:56,530 INFO L93 Difference]: Finished difference Result 1409 states and 4234 transitions. [2021-06-05 13:11:56,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:56,531 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:56,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:56,533 INFO L225 Difference]: With dead ends: 1409 [2021-06-05 13:11:56,533 INFO L226 Difference]: Without dead ends: 1286 [2021-06-05 13:11:56,533 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:56,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2021-06-05 13:11:56,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1180. [2021-06-05 13:11:56,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1179 states have (on average 3.063613231552163) internal successors, (3612), 1179 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3612 transitions. [2021-06-05 13:11:56,578 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3612 transitions. Word has length 26 [2021-06-05 13:11:56,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:56,578 INFO L482 AbstractCegarLoop]: Abstraction has 1180 states and 3612 transitions. [2021-06-05 13:11:56,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:56,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3612 transitions. [2021-06-05 13:11:56,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:56,580 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:56,580 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:56,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 13:11:56,581 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:56,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:56,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1205087834, now seen corresponding path program 33 times [2021-06-05 13:11:56,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:56,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355138115] [2021-06-05 13:11:56,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:56,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:56,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:56,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355138115] [2021-06-05 13:11:56,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355138115] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:56,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:56,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 13:11:56,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006272596] [2021-06-05 13:11:56,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 13:11:56,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:56,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 13:11:56,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:11:56,641 INFO L87 Difference]: Start difference. First operand 1180 states and 3612 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:56,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:56,774 INFO L93 Difference]: Finished difference Result 1516 states and 4589 transitions. [2021-06-05 13:11:56,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 13:11:56,775 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:56,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:56,777 INFO L225 Difference]: With dead ends: 1516 [2021-06-05 13:11:56,777 INFO L226 Difference]: Without dead ends: 1419 [2021-06-05 13:11:56,777 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.5ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:11:56,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-06-05 13:11:56,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1247. [2021-06-05 13:11:56,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1246 states have (on average 3.0698234349919744) internal successors, (3825), 1246 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:56,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3825 transitions. [2021-06-05 13:11:56,796 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3825 transitions. Word has length 26 [2021-06-05 13:11:56,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:56,796 INFO L482 AbstractCegarLoop]: Abstraction has 1247 states and 3825 transitions. [2021-06-05 13:11:56,796 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:56,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3825 transitions. [2021-06-05 13:11:56,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:56,797 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:56,798 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:56,798 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 13:11:56,798 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:56,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:56,798 INFO L82 PathProgramCache]: Analyzing trace with hash 296836698, now seen corresponding path program 34 times [2021-06-05 13:11:56,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:56,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487047125] [2021-06-05 13:11:56,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:56,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:56,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:56,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487047125] [2021-06-05 13:11:56,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487047125] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:56,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:56,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:56,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478215543] [2021-06-05 13:11:56,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:56,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:56,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:56,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:56,864 INFO L87 Difference]: Start difference. First operand 1247 states and 3825 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:57,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:57,032 INFO L93 Difference]: Finished difference Result 1463 states and 4440 transitions. [2021-06-05 13:11:57,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:57,033 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:57,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:57,035 INFO L225 Difference]: With dead ends: 1463 [2021-06-05 13:11:57,035 INFO L226 Difference]: Without dead ends: 1384 [2021-06-05 13:11:57,035 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:57,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-06-05 13:11:57,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1263. [2021-06-05 13:11:57,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1262 states have (on average 3.0705229793977815) internal successors, (3875), 1262 states have internal predecessors, (3875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:57,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 3875 transitions. [2021-06-05 13:11:57,053 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 3875 transitions. Word has length 26 [2021-06-05 13:11:57,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:57,053 INFO L482 AbstractCegarLoop]: Abstraction has 1263 states and 3875 transitions. [2021-06-05 13:11:57,053 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:57,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 3875 transitions. [2021-06-05 13:11:57,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:57,055 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:57,055 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:57,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 13:11:57,055 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:57,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:57,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1166281306, now seen corresponding path program 35 times [2021-06-05 13:11:57,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:57,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579049529] [2021-06-05 13:11:57,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:57,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:57,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:57,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579049529] [2021-06-05 13:11:57,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579049529] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:57,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:57,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:57,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668484206] [2021-06-05 13:11:57,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:57,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:57,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:57,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:57,132 INFO L87 Difference]: Start difference. First operand 1263 states and 3875 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:57,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:57,284 INFO L93 Difference]: Finished difference Result 1486 states and 4488 transitions. [2021-06-05 13:11:57,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:57,284 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:57,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:57,286 INFO L225 Difference]: With dead ends: 1486 [2021-06-05 13:11:57,286 INFO L226 Difference]: Without dead ends: 1382 [2021-06-05 13:11:57,286 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:57,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-06-05 13:11:57,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1252. [2021-06-05 13:11:57,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 3.0679456434852117) internal successors, (3838), 1251 states have internal predecessors, (3838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3838 transitions. [2021-06-05 13:11:57,303 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3838 transitions. Word has length 26 [2021-06-05 13:11:57,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:57,303 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3838 transitions. [2021-06-05 13:11:57,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:57,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3838 transitions. [2021-06-05 13:11:57,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:57,305 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:57,305 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:57,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 13:11:57,305 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:57,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:57,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1217412664, now seen corresponding path program 36 times [2021-06-05 13:11:57,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:57,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588860686] [2021-06-05 13:11:57,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:57,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:57,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588860686] [2021-06-05 13:11:57,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588860686] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:57,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:57,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:57,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727913564] [2021-06-05 13:11:57,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:57,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:57,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:57,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:57,364 INFO L87 Difference]: Start difference. First operand 1252 states and 3838 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:57,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:57,500 INFO L93 Difference]: Finished difference Result 1521 states and 4598 transitions. [2021-06-05 13:11:57,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:57,501 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:57,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:57,503 INFO L225 Difference]: With dead ends: 1521 [2021-06-05 13:11:57,503 INFO L226 Difference]: Without dead ends: 1427 [2021-06-05 13:11:57,503 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:57,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-06-05 13:11:57,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1240. [2021-06-05 13:11:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1239 states have (on average 3.069410815173527) internal successors, (3803), 1239 states have internal predecessors, (3803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:57,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 3803 transitions. [2021-06-05 13:11:57,525 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 3803 transitions. Word has length 26 [2021-06-05 13:11:57,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:57,525 INFO L482 AbstractCegarLoop]: Abstraction has 1240 states and 3803 transitions. [2021-06-05 13:11:57,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:57,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 3803 transitions. [2021-06-05 13:11:57,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:57,527 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:57,527 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:57,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 13:11:57,527 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:57,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:57,528 INFO L82 PathProgramCache]: Analyzing trace with hash 369322260, now seen corresponding path program 37 times [2021-06-05 13:11:57,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:57,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399486171] [2021-06-05 13:11:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:57,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:57,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:57,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399486171] [2021-06-05 13:11:57,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399486171] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:57,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:57,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 13:11:57,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968798188] [2021-06-05 13:11:57,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 13:11:57,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:57,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 13:11:57,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:11:57,582 INFO L87 Difference]: Start difference. First operand 1240 states and 3803 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:57,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:57,706 INFO L93 Difference]: Finished difference Result 1472 states and 4446 transitions. [2021-06-05 13:11:57,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 13:11:57,706 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:57,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:57,708 INFO L225 Difference]: With dead ends: 1472 [2021-06-05 13:11:57,709 INFO L226 Difference]: Without dead ends: 1393 [2021-06-05 13:11:57,709 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:11:57,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-06-05 13:11:57,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1277. [2021-06-05 13:11:57,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1276 states have (on average 3.0642633228840124) internal successors, (3910), 1276 states have internal predecessors, (3910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:57,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 3910 transitions. [2021-06-05 13:11:57,730 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 3910 transitions. Word has length 26 [2021-06-05 13:11:57,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:57,730 INFO L482 AbstractCegarLoop]: Abstraction has 1277 states and 3910 transitions. [2021-06-05 13:11:57,730 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:57,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 3910 transitions. [2021-06-05 13:11:57,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:57,732 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:57,732 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:57,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-05 13:11:57,732 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:57,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:57,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1238766868, now seen corresponding path program 38 times [2021-06-05 13:11:57,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:57,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386643129] [2021-06-05 13:11:57,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:57,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:57,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386643129] [2021-06-05 13:11:57,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386643129] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:57,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:57,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:57,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033714307] [2021-06-05 13:11:57,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:57,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:57,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:57,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:57,797 INFO L87 Difference]: Start difference. First operand 1277 states and 3910 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:57,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:57,933 INFO L93 Difference]: Finished difference Result 1553 states and 4668 transitions. [2021-06-05 13:11:57,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:57,933 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:57,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:57,935 INFO L225 Difference]: With dead ends: 1553 [2021-06-05 13:11:57,935 INFO L226 Difference]: Without dead ends: 1354 [2021-06-05 13:11:57,935 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:57,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2021-06-05 13:11:57,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1244. [2021-06-05 13:11:57,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1243 states have (on average 3.0402252614641996) internal successors, (3779), 1243 states have internal predecessors, (3779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:57,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3779 transitions. [2021-06-05 13:11:57,951 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3779 transitions. Word has length 26 [2021-06-05 13:11:57,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:57,951 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3779 transitions. [2021-06-05 13:11:57,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:57,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3779 transitions. [2021-06-05 13:11:57,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:57,953 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:57,953 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:57,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-05 13:11:57,953 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:57,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:57,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1168096970, now seen corresponding path program 39 times [2021-06-05 13:11:57,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:57,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980386655] [2021-06-05 13:11:57,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:58,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:58,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:58,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980386655] [2021-06-05 13:11:58,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980386655] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:58,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:58,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:58,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933764919] [2021-06-05 13:11:58,035 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:58,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:58,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:58,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:58,036 INFO L87 Difference]: Start difference. First operand 1244 states and 3779 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:58,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:58,172 INFO L93 Difference]: Finished difference Result 1430 states and 4297 transitions. [2021-06-05 13:11:58,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:58,172 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:58,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:58,174 INFO L225 Difference]: With dead ends: 1430 [2021-06-05 13:11:58,174 INFO L226 Difference]: Without dead ends: 1351 [2021-06-05 13:11:58,174 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:58,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-06-05 13:11:58,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1255. [2021-06-05 13:11:58,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 3.0382775119617227) internal successors, (3810), 1254 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 3810 transitions. [2021-06-05 13:11:58,194 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 3810 transitions. Word has length 26 [2021-06-05 13:11:58,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:58,194 INFO L482 AbstractCegarLoop]: Abstraction has 1255 states and 3810 transitions. [2021-06-05 13:11:58,194 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:58,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 3810 transitions. [2021-06-05 13:11:58,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:58,197 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:58,197 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:58,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-05 13:11:58,197 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:58,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:58,197 INFO L82 PathProgramCache]: Analyzing trace with hash -298652362, now seen corresponding path program 40 times [2021-06-05 13:11:58,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:58,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122840247] [2021-06-05 13:11:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:58,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:58,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:58,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122840247] [2021-06-05 13:11:58,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122840247] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:58,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:58,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:58,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718902729] [2021-06-05 13:11:58,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:58,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:58,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:58,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:58,261 INFO L87 Difference]: Start difference. First operand 1255 states and 3810 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:58,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:58,410 INFO L93 Difference]: Finished difference Result 1537 states and 4623 transitions. [2021-06-05 13:11:58,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:58,410 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:58,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:58,412 INFO L225 Difference]: With dead ends: 1537 [2021-06-05 13:11:58,412 INFO L226 Difference]: Without dead ends: 1442 [2021-06-05 13:11:58,413 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:58,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2021-06-05 13:11:58,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1244. [2021-06-05 13:11:58,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1243 states have (on average 3.0378117457763474) internal successors, (3776), 1243 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:58,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3776 transitions. [2021-06-05 13:11:58,434 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3776 transitions. Word has length 26 [2021-06-05 13:11:58,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:58,434 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3776 transitions. [2021-06-05 13:11:58,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:58,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3776 transitions. [2021-06-05 13:11:58,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:58,437 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:58,437 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:58,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-05 13:11:58,437 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:58,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:58,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1872416688, now seen corresponding path program 41 times [2021-06-05 13:11:58,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:58,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538141653] [2021-06-05 13:11:58,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:58,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:58,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538141653] [2021-06-05 13:11:58,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538141653] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:58,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:58,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:58,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956896850] [2021-06-05 13:11:58,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:58,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:58,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:58,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:58,503 INFO L87 Difference]: Start difference. First operand 1244 states and 3776 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:58,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:58,642 INFO L93 Difference]: Finished difference Result 1525 states and 4571 transitions. [2021-06-05 13:11:58,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:58,643 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:58,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:58,645 INFO L225 Difference]: With dead ends: 1525 [2021-06-05 13:11:58,645 INFO L226 Difference]: Without dead ends: 1377 [2021-06-05 13:11:58,645 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:58,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2021-06-05 13:11:58,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1245. [2021-06-05 13:11:58,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1244 states have (on average 3.0434083601286175) internal successors, (3786), 1244 states have internal predecessors, (3786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:58,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3786 transitions. [2021-06-05 13:11:58,662 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3786 transitions. Word has length 26 [2021-06-05 13:11:58,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:58,662 INFO L482 AbstractCegarLoop]: Abstraction has 1245 states and 3786 transitions. [2021-06-05 13:11:58,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:58,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3786 transitions. [2021-06-05 13:11:58,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:58,664 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:58,664 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:58,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-05 13:11:58,664 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:58,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:58,665 INFO L82 PathProgramCache]: Analyzing trace with hash 733362486, now seen corresponding path program 42 times [2021-06-05 13:11:58,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:58,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250725179] [2021-06-05 13:11:58,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:58,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:58,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250725179] [2021-06-05 13:11:58,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250725179] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:58,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:58,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:58,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903005491] [2021-06-05 13:11:58,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:58,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:58,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:58,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:58,734 INFO L87 Difference]: Start difference. First operand 1245 states and 3786 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:58,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:58,876 INFO L93 Difference]: Finished difference Result 1531 states and 4573 transitions. [2021-06-05 13:11:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:58,876 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:58,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:58,878 INFO L225 Difference]: With dead ends: 1531 [2021-06-05 13:11:58,878 INFO L226 Difference]: Without dead ends: 1401 [2021-06-05 13:11:58,879 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:58,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2021-06-05 13:11:58,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1297. [2021-06-05 13:11:58,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1297 states, 1296 states have (on average 3.029320987654321) internal successors, (3926), 1296 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:58,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 3926 transitions. [2021-06-05 13:11:58,900 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 3926 transitions. Word has length 26 [2021-06-05 13:11:58,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:58,900 INFO L482 AbstractCegarLoop]: Abstraction has 1297 states and 3926 transitions. [2021-06-05 13:11:58,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:58,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 3926 transitions. [2021-06-05 13:11:58,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:58,903 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:58,903 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:58,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-05 13:11:58,903 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:58,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:58,904 INFO L82 PathProgramCache]: Analyzing trace with hash -126222508, now seen corresponding path program 43 times [2021-06-05 13:11:58,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:58,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422867383] [2021-06-05 13:11:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:58,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:58,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:58,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422867383] [2021-06-05 13:11:58,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422867383] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:58,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:58,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:11:58,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557349611] [2021-06-05 13:11:58,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:11:58,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:58,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:11:58,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:58,982 INFO L87 Difference]: Start difference. First operand 1297 states and 3926 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:59,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:59,163 INFO L93 Difference]: Finished difference Result 1518 states and 4526 transitions. [2021-06-05 13:11:59,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:11:59,163 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:59,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:59,165 INFO L225 Difference]: With dead ends: 1518 [2021-06-05 13:11:59,165 INFO L226 Difference]: Without dead ends: 1395 [2021-06-05 13:11:59,165 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:59,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2021-06-05 13:11:59,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1271. [2021-06-05 13:11:59,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 1270 states have (on average 3.0393700787401574) internal successors, (3860), 1270 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:59,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 3860 transitions. [2021-06-05 13:11:59,182 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 3860 transitions. Word has length 26 [2021-06-05 13:11:59,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:59,182 INFO L482 AbstractCegarLoop]: Abstraction has 1271 states and 3860 transitions. [2021-06-05 13:11:59,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:59,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 3860 transitions. [2021-06-05 13:11:59,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:59,184 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:59,184 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:59,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-05 13:11:59,184 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:59,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:59,184 INFO L82 PathProgramCache]: Analyzing trace with hash 363756408, now seen corresponding path program 44 times [2021-06-05 13:11:59,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:59,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464229420] [2021-06-05 13:11:59,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:59,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:59,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:59,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464229420] [2021-06-05 13:11:59,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464229420] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:59,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:59,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:11:59,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350086365] [2021-06-05 13:11:59,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:11:59,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:59,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:11:59,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:59,262 INFO L87 Difference]: Start difference. First operand 1271 states and 3860 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:59,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:59,435 INFO L93 Difference]: Finished difference Result 1636 states and 4901 transitions. [2021-06-05 13:11:59,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:11:59,435 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:59,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:59,437 INFO L225 Difference]: With dead ends: 1636 [2021-06-05 13:11:59,438 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 13:11:59,438 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:11:59,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 13:11:59,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1331. [2021-06-05 13:11:59,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 1330 states have (on average 3.03609022556391) internal successors, (4038), 1330 states have internal predecessors, (4038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:59,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 4038 transitions. [2021-06-05 13:11:59,460 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 4038 transitions. Word has length 26 [2021-06-05 13:11:59,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:59,461 INFO L482 AbstractCegarLoop]: Abstraction has 1331 states and 4038 transitions. [2021-06-05 13:11:59,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:59,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 4038 transitions. [2021-06-05 13:11:59,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:59,463 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:59,463 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:59,463 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-05 13:11:59,464 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:59,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:59,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1287799378, now seen corresponding path program 45 times [2021-06-05 13:11:59,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:59,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894186722] [2021-06-05 13:11:59,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:59,539 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:59,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894186722] [2021-06-05 13:11:59,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894186722] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:59,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:59,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:11:59,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929245246] [2021-06-05 13:11:59,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:11:59,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:59,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:11:59,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:59,540 INFO L87 Difference]: Start difference. First operand 1331 states and 4038 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:59,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:59,714 INFO L93 Difference]: Finished difference Result 1514 states and 4527 transitions. [2021-06-05 13:11:59,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:11:59,715 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:11:59,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:59,717 INFO L225 Difference]: With dead ends: 1514 [2021-06-05 13:11:59,717 INFO L226 Difference]: Without dead ends: 1403 [2021-06-05 13:11:59,717 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:59,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2021-06-05 13:11:59,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1295. [2021-06-05 13:11:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1294 states have (on average 3.030139103554869) internal successors, (3921), 1294 states have internal predecessors, (3921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:59,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 3921 transitions. [2021-06-05 13:11:59,733 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 3921 transitions. Word has length 26 [2021-06-05 13:11:59,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:59,733 INFO L482 AbstractCegarLoop]: Abstraction has 1295 states and 3921 transitions. [2021-06-05 13:11:59,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:11:59,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 3921 transitions. [2021-06-05 13:11:59,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:11:59,736 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:59,736 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:59,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-05 13:11:59,736 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:59,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:59,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1248494412, now seen corresponding path program 46 times [2021-06-05 13:11:59,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:59,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933383662] [2021-06-05 13:11:59,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:11:59,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:59,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933383662] [2021-06-05 13:11:59,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933383662] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:59,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:59,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:11:59,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138774866] [2021-06-05 13:11:59,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:11:59,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:59,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:11:59,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:11:59,817 INFO L87 Difference]: Start difference. First operand 1295 states and 3921 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:00,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:00,002 INFO L93 Difference]: Finished difference Result 1453 states and 4342 transitions. [2021-06-05 13:12:00,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:00,002 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:00,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:00,004 INFO L225 Difference]: With dead ends: 1453 [2021-06-05 13:12:00,005 INFO L226 Difference]: Without dead ends: 1374 [2021-06-05 13:12:00,005 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2021-06-05 13:12:00,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1319. [2021-06-05 13:12:00,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 3.030349013657056) internal successors, (3994), 1318 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:00,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 3994 transitions. [2021-06-05 13:12:00,022 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 3994 transitions. Word has length 26 [2021-06-05 13:12:00,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:00,022 INFO L482 AbstractCegarLoop]: Abstraction has 1319 states and 3994 transitions. [2021-06-05 13:12:00,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:00,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 3994 transitions. [2021-06-05 13:12:00,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:00,023 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:00,023 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:00,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-05 13:12:00,023 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:00,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:00,024 INFO L82 PathProgramCache]: Analyzing trace with hash -379049804, now seen corresponding path program 47 times [2021-06-05 13:12:00,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:00,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503900000] [2021-06-05 13:12:00,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:00,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:00,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503900000] [2021-06-05 13:12:00,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503900000] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:00,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:00,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:00,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931635734] [2021-06-05 13:12:00,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:00,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:00,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:00,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:00,094 INFO L87 Difference]: Start difference. First operand 1319 states and 3994 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:00,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:00,269 INFO L93 Difference]: Finished difference Result 1550 states and 4630 transitions. [2021-06-05 13:12:00,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:00,270 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:00,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:00,272 INFO L225 Difference]: With dead ends: 1550 [2021-06-05 13:12:00,272 INFO L226 Difference]: Without dead ends: 1455 [2021-06-05 13:12:00,272 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:00,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-06-05 13:12:00,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1323. [2021-06-05 13:12:00,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1323 states, 1322 states have (on average 3.0310136157337366) internal successors, (4007), 1322 states have internal predecessors, (4007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:00,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 4007 transitions. [2021-06-05 13:12:00,295 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 4007 transitions. Word has length 26 [2021-06-05 13:12:00,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:00,295 INFO L482 AbstractCegarLoop]: Abstraction has 1323 states and 4007 transitions. [2021-06-05 13:12:00,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:00,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 4007 transitions. [2021-06-05 13:12:00,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:00,297 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:00,298 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:00,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-05 13:12:00,298 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:00,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:00,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1847761034, now seen corresponding path program 48 times [2021-06-05 13:12:00,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:00,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994934601] [2021-06-05 13:12:00,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:00,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:00,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:00,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994934601] [2021-06-05 13:12:00,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994934601] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:00,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:00,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:00,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553925937] [2021-06-05 13:12:00,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:00,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:00,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:00,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:00,378 INFO L87 Difference]: Start difference. First operand 1323 states and 4007 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:00,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:00,585 INFO L93 Difference]: Finished difference Result 1551 states and 4630 transitions. [2021-06-05 13:12:00,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:00,586 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:00,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:00,588 INFO L225 Difference]: With dead ends: 1551 [2021-06-05 13:12:00,588 INFO L226 Difference]: Without dead ends: 1472 [2021-06-05 13:12:00,588 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:00,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-06-05 13:12:00,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1327. [2021-06-05 13:12:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1326 states have (on average 3.0279034690799396) internal successors, (4015), 1326 states have internal predecessors, (4015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:00,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 4015 transitions. [2021-06-05 13:12:00,610 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 4015 transitions. Word has length 26 [2021-06-05 13:12:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:00,610 INFO L482 AbstractCegarLoop]: Abstraction has 1327 states and 4015 transitions. [2021-06-05 13:12:00,610 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 4015 transitions. [2021-06-05 13:12:00,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:00,612 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:00,612 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:00,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-05 13:12:00,612 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:00,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:00,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1873808986, now seen corresponding path program 49 times [2021-06-05 13:12:00,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:00,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380156283] [2021-06-05 13:12:00,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:00,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:00,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380156283] [2021-06-05 13:12:00,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380156283] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:00,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:00,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:00,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907963352] [2021-06-05 13:12:00,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:00,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:00,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:00,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:00,716 INFO L87 Difference]: Start difference. First operand 1327 states and 4015 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:00,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:00,954 INFO L93 Difference]: Finished difference Result 1593 states and 4759 transitions. [2021-06-05 13:12:00,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:00,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:00,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:00,957 INFO L225 Difference]: With dead ends: 1593 [2021-06-05 13:12:00,957 INFO L226 Difference]: Without dead ends: 1491 [2021-06-05 13:12:00,958 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:00,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-06-05 13:12:00,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1313. [2021-06-05 13:12:00,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1312 states have (on average 3.0373475609756095) internal successors, (3985), 1312 states have internal predecessors, (3985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:00,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 3985 transitions. [2021-06-05 13:12:00,981 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 3985 transitions. Word has length 26 [2021-06-05 13:12:00,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:00,981 INFO L482 AbstractCegarLoop]: Abstraction has 1313 states and 3985 transitions. [2021-06-05 13:12:00,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:00,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 3985 transitions. [2021-06-05 13:12:00,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:00,984 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:00,984 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:00,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-05 13:12:00,985 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:00,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:00,985 INFO L82 PathProgramCache]: Analyzing trace with hash -440597224, now seen corresponding path program 50 times [2021-06-05 13:12:00,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:00,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154106137] [2021-06-05 13:12:00,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:01,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:01,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154106137] [2021-06-05 13:12:01,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154106137] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:01,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:01,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:01,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081585987] [2021-06-05 13:12:01,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:01,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:01,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:01,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:01,056 INFO L87 Difference]: Start difference. First operand 1313 states and 3985 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:01,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:01,197 INFO L93 Difference]: Finished difference Result 1603 states and 4787 transitions. [2021-06-05 13:12:01,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:01,198 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:01,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:01,200 INFO L225 Difference]: With dead ends: 1603 [2021-06-05 13:12:01,200 INFO L226 Difference]: Without dead ends: 1453 [2021-06-05 13:12:01,200 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:01,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-05 13:12:01,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1339. [2021-06-05 13:12:01,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1338 states have (on average 3.0336322869955157) internal successors, (4059), 1338 states have internal predecessors, (4059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:01,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 4059 transitions. [2021-06-05 13:12:01,216 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 4059 transitions. Word has length 26 [2021-06-05 13:12:01,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:01,216 INFO L482 AbstractCegarLoop]: Abstraction has 1339 states and 4059 transitions. [2021-06-05 13:12:01,216 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:01,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 4059 transitions. [2021-06-05 13:12:01,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:01,217 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:01,217 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:01,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-05 13:12:01,218 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:01,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:01,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1300182218, now seen corresponding path program 51 times [2021-06-05 13:12:01,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:01,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601913100] [2021-06-05 13:12:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:01,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:01,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601913100] [2021-06-05 13:12:01,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601913100] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:01,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:01,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:01,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149786464] [2021-06-05 13:12:01,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:01,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:01,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:01,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:01,307 INFO L87 Difference]: Start difference. First operand 1339 states and 4059 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:01,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:01,509 INFO L93 Difference]: Finished difference Result 1564 states and 4681 transitions. [2021-06-05 13:12:01,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:01,510 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:01,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:01,513 INFO L225 Difference]: With dead ends: 1564 [2021-06-05 13:12:01,513 INFO L226 Difference]: Without dead ends: 1432 [2021-06-05 13:12:01,514 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:01,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2021-06-05 13:12:01,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1313. [2021-06-05 13:12:01,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1312 states have (on average 3.041920731707317) internal successors, (3991), 1312 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:01,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 3991 transitions. [2021-06-05 13:12:01,536 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 3991 transitions. Word has length 26 [2021-06-05 13:12:01,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:01,536 INFO L482 AbstractCegarLoop]: Abstraction has 1313 states and 3991 transitions. [2021-06-05 13:12:01,536 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:01,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 3991 transitions. [2021-06-05 13:12:01,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:01,538 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:01,538 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:01,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-05 13:12:01,538 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:01,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:01,539 INFO L82 PathProgramCache]: Analyzing trace with hash -658405768, now seen corresponding path program 52 times [2021-06-05 13:12:01,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:01,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236815053] [2021-06-05 13:12:01,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:01,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:01,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:01,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236815053] [2021-06-05 13:12:01,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236815053] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:01,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:01,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:01,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897863244] [2021-06-05 13:12:01,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:01,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:01,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:01,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:01,604 INFO L87 Difference]: Start difference. First operand 1313 states and 3991 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:01,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:01,771 INFO L93 Difference]: Finished difference Result 1533 states and 4603 transitions. [2021-06-05 13:12:01,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:01,771 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:01,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:01,774 INFO L225 Difference]: With dead ends: 1533 [2021-06-05 13:12:01,774 INFO L226 Difference]: Without dead ends: 1436 [2021-06-05 13:12:01,774 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:01,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-06-05 13:12:01,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1330. [2021-06-05 13:12:01,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 1329 states have (on average 3.0413844996237773) internal successors, (4042), 1329 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:01,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 4042 transitions. [2021-06-05 13:12:01,797 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 4042 transitions. Word has length 26 [2021-06-05 13:12:01,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:01,797 INFO L482 AbstractCegarLoop]: Abstraction has 1330 states and 4042 transitions. [2021-06-05 13:12:01,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:01,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 4042 transitions. [2021-06-05 13:12:01,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:01,799 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:01,799 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:01,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-05 13:12:01,800 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:01,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:01,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1566656904, now seen corresponding path program 53 times [2021-06-05 13:12:01,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:01,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66104198] [2021-06-05 13:12:01,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:01,876 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:01,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66104198] [2021-06-05 13:12:01,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66104198] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:01,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:01,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:01,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483855665] [2021-06-05 13:12:01,877 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:01,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:01,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:01,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:01,877 INFO L87 Difference]: Start difference. First operand 1330 states and 4042 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:02,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:02,107 INFO L93 Difference]: Finished difference Result 1540 states and 4628 transitions. [2021-06-05 13:12:02,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:02,107 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:02,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:02,109 INFO L225 Difference]: With dead ends: 1540 [2021-06-05 13:12:02,109 INFO L226 Difference]: Without dead ends: 1461 [2021-06-05 13:12:02,109 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:02,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-06-05 13:12:02,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1342. [2021-06-05 13:12:02,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1341 states have (on average 3.0395227442207307) internal successors, (4076), 1341 states have internal predecessors, (4076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:02,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 4076 transitions. [2021-06-05 13:12:02,126 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 4076 transitions. Word has length 26 [2021-06-05 13:12:02,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:02,126 INFO L482 AbstractCegarLoop]: Abstraction has 1342 states and 4076 transitions. [2021-06-05 13:12:02,126 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:02,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 4076 transitions. [2021-06-05 13:12:02,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:02,127 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:02,127 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:02,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-05 13:12:02,128 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:02,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:02,128 INFO L82 PathProgramCache]: Analyzing trace with hash -697212296, now seen corresponding path program 54 times [2021-06-05 13:12:02,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:02,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198009004] [2021-06-05 13:12:02,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:02,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:02,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198009004] [2021-06-05 13:12:02,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198009004] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:02,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:02,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:02,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155716549] [2021-06-05 13:12:02,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:02,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:02,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:02,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:02,208 INFO L87 Difference]: Start difference. First operand 1342 states and 4076 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:02,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:02,438 INFO L93 Difference]: Finished difference Result 1587 states and 4770 transitions. [2021-06-05 13:12:02,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:02,438 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:02,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:02,441 INFO L225 Difference]: With dead ends: 1587 [2021-06-05 13:12:02,441 INFO L226 Difference]: Without dead ends: 1474 [2021-06-05 13:12:02,441 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:02,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-06-05 13:12:02,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1340. [2021-06-05 13:12:02,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1339 states have (on average 3.0403286034353996) internal successors, (4071), 1339 states have internal predecessors, (4071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:02,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 4071 transitions. [2021-06-05 13:12:02,464 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 4071 transitions. Word has length 26 [2021-06-05 13:12:02,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:02,464 INFO L482 AbstractCegarLoop]: Abstraction has 1340 states and 4071 transitions. [2021-06-05 13:12:02,464 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:02,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 4071 transitions. [2021-06-05 13:12:02,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:02,466 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:02,466 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:02,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-05 13:12:02,466 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:02,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:02,466 INFO L82 PathProgramCache]: Analyzing trace with hash -646080938, now seen corresponding path program 55 times [2021-06-05 13:12:02,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:02,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174182306] [2021-06-05 13:12:02,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:02,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:02,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174182306] [2021-06-05 13:12:02,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174182306] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:02,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:02,589 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:02,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459621026] [2021-06-05 13:12:02,590 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:02,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:02,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:02,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:02,590 INFO L87 Difference]: Start difference. First operand 1340 states and 4071 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:02,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:02,801 INFO L93 Difference]: Finished difference Result 1550 states and 4655 transitions. [2021-06-05 13:12:02,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:02,802 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:02,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:02,804 INFO L225 Difference]: With dead ends: 1550 [2021-06-05 13:12:02,805 INFO L226 Difference]: Without dead ends: 1456 [2021-06-05 13:12:02,805 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2021-06-05 13:12:02,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1323. [2021-06-05 13:12:02,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1323 states, 1322 states have (on average 3.042360060514372) internal successors, (4022), 1322 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:02,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 4022 transitions. [2021-06-05 13:12:02,830 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 4022 transitions. Word has length 26 [2021-06-05 13:12:02,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:02,831 INFO L482 AbstractCegarLoop]: Abstraction has 1323 states and 4022 transitions. [2021-06-05 13:12:02,831 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:02,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 4022 transitions. [2021-06-05 13:12:02,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:02,833 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:02,833 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:02,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-05 13:12:02,833 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:02,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:02,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1155018158, now seen corresponding path program 56 times [2021-06-05 13:12:02,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:02,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869477643] [2021-06-05 13:12:02,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:02,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:02,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869477643] [2021-06-05 13:12:02,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869477643] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:02,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:02,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:02,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514773033] [2021-06-05 13:12:02,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:02,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:02,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:02,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:02,905 INFO L87 Difference]: Start difference. First operand 1323 states and 4022 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:03,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:03,068 INFO L93 Difference]: Finished difference Result 1614 states and 4865 transitions. [2021-06-05 13:12:03,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:03,068 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:03,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:03,070 INFO L225 Difference]: With dead ends: 1614 [2021-06-05 13:12:03,070 INFO L226 Difference]: Without dead ends: 1535 [2021-06-05 13:12:03,070 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:03,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-06-05 13:12:03,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1344. [2021-06-05 13:12:03,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1343 states have (on average 3.040953090096798) internal successors, (4084), 1343 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:03,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 4084 transitions. [2021-06-05 13:12:03,088 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 4084 transitions. Word has length 26 [2021-06-05 13:12:03,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:03,088 INFO L482 AbstractCegarLoop]: Abstraction has 1344 states and 4084 transitions. [2021-06-05 13:12:03,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:03,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 4084 transitions. [2021-06-05 13:12:03,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:03,089 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:03,089 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:03,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-05 13:12:03,089 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:03,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:03,090 INFO L82 PathProgramCache]: Analyzing trace with hash 67669594, now seen corresponding path program 57 times [2021-06-05 13:12:03,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:03,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390940640] [2021-06-05 13:12:03,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:03,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:03,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:03,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390940640] [2021-06-05 13:12:03,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390940640] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:03,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:03,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:03,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730548640] [2021-06-05 13:12:03,159 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:03,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:03,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:03,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:03,159 INFO L87 Difference]: Start difference. First operand 1344 states and 4084 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:03,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:03,303 INFO L93 Difference]: Finished difference Result 1680 states and 5059 transitions. [2021-06-05 13:12:03,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:03,303 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:03,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:03,305 INFO L225 Difference]: With dead ends: 1680 [2021-06-05 13:12:03,305 INFO L226 Difference]: Without dead ends: 1585 [2021-06-05 13:12:03,305 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:03,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-06-05 13:12:03,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1362. [2021-06-05 13:12:03,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 3.044819985304923) internal successors, (4144), 1361 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:03,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 4144 transitions. [2021-06-05 13:12:03,323 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 4144 transitions. Word has length 26 [2021-06-05 13:12:03,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:03,324 INFO L482 AbstractCegarLoop]: Abstraction has 1362 states and 4144 transitions. [2021-06-05 13:12:03,324 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:03,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 4144 transitions. [2021-06-05 13:12:03,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:03,326 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:03,326 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:03,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-05 13:12:03,326 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:03,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:03,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1571020596, now seen corresponding path program 58 times [2021-06-05 13:12:03,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:03,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267068045] [2021-06-05 13:12:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:03,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:03,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:03,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267068045] [2021-06-05 13:12:03,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267068045] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:03,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:03,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:03,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990383711] [2021-06-05 13:12:03,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:03,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:03,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:03,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:03,392 INFO L87 Difference]: Start difference. First operand 1362 states and 4144 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:03,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:03,538 INFO L93 Difference]: Finished difference Result 1581 states and 4769 transitions. [2021-06-05 13:12:03,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:03,538 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:03,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:03,540 INFO L225 Difference]: With dead ends: 1581 [2021-06-05 13:12:03,540 INFO L226 Difference]: Without dead ends: 1490 [2021-06-05 13:12:03,540 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:03,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2021-06-05 13:12:03,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1345. [2021-06-05 13:12:03,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1344 states have (on average 3.044642857142857) internal successors, (4092), 1344 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:03,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 4092 transitions. [2021-06-05 13:12:03,560 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 4092 transitions. Word has length 26 [2021-06-05 13:12:03,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:03,560 INFO L482 AbstractCegarLoop]: Abstraction has 1345 states and 4092 transitions. [2021-06-05 13:12:03,560 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:03,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 4092 transitions. [2021-06-05 13:12:03,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:03,562 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:03,562 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:03,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-05 13:12:03,562 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:03,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:03,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1824705716, now seen corresponding path program 59 times [2021-06-05 13:12:03,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:03,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802255283] [2021-06-05 13:12:03,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:03,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:03,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802255283] [2021-06-05 13:12:03,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802255283] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:03,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:03,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:03,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079102839] [2021-06-05 13:12:03,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:03,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:03,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:03,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:03,642 INFO L87 Difference]: Start difference. First operand 1345 states and 4092 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:03,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:03,829 INFO L93 Difference]: Finished difference Result 1471 states and 4427 transitions. [2021-06-05 13:12:03,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:03,830 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:03,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:03,832 INFO L225 Difference]: With dead ends: 1471 [2021-06-05 13:12:03,832 INFO L226 Difference]: Without dead ends: 1392 [2021-06-05 13:12:03,832 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:03,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-06-05 13:12:03,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1357. [2021-06-05 13:12:03,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1356 states have (on average 3.0427728613569323) internal successors, (4126), 1356 states have internal predecessors, (4126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 4126 transitions. [2021-06-05 13:12:03,849 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 4126 transitions. Word has length 26 [2021-06-05 13:12:03,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:03,849 INFO L482 AbstractCegarLoop]: Abstraction has 1357 states and 4126 transitions. [2021-06-05 13:12:03,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:03,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 4126 transitions. [2021-06-05 13:12:03,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:03,850 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:03,850 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:03,850 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-05 13:12:03,851 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:03,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:03,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1600816972, now seen corresponding path program 60 times [2021-06-05 13:12:03,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:03,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769380719] [2021-06-05 13:12:03,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:03,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:03,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:03,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769380719] [2021-06-05 13:12:03,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769380719] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:03,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:03,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:03,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239079422] [2021-06-05 13:12:03,931 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:03,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:03,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:03,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:03,932 INFO L87 Difference]: Start difference. First operand 1357 states and 4126 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:04,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:04,145 INFO L93 Difference]: Finished difference Result 1521 states and 4567 transitions. [2021-06-05 13:12:04,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:04,145 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:04,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:04,147 INFO L225 Difference]: With dead ends: 1521 [2021-06-05 13:12:04,147 INFO L226 Difference]: Without dead ends: 1426 [2021-06-05 13:12:04,147 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:04,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2021-06-05 13:12:04,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1365. [2021-06-05 13:12:04,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1364 states have (on average 3.0454545454545454) internal successors, (4154), 1364 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:04,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 4154 transitions. [2021-06-05 13:12:04,163 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 4154 transitions. Word has length 26 [2021-06-05 13:12:04,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:04,163 INFO L482 AbstractCegarLoop]: Abstraction has 1365 states and 4154 transitions. [2021-06-05 13:12:04,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:04,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 4154 transitions. [2021-06-05 13:12:04,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:04,165 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:04,165 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:04,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-05 13:12:04,165 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:04,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:04,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1225439094, now seen corresponding path program 61 times [2021-06-05 13:12:04,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:04,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138868541] [2021-06-05 13:12:04,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:04,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:04,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138868541] [2021-06-05 13:12:04,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138868541] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:04,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:04,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:04,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171501621] [2021-06-05 13:12:04,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:04,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:04,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:04,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:04,241 INFO L87 Difference]: Start difference. First operand 1365 states and 4154 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:04,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:04,477 INFO L93 Difference]: Finished difference Result 1567 states and 4715 transitions. [2021-06-05 13:12:04,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:04,477 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:04,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:04,480 INFO L225 Difference]: With dead ends: 1567 [2021-06-05 13:12:04,480 INFO L226 Difference]: Without dead ends: 1488 [2021-06-05 13:12:04,480 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:04,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2021-06-05 13:12:04,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1372. [2021-06-05 13:12:04,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1371 states have (on average 3.0437636761487963) internal successors, (4173), 1371 states have internal predecessors, (4173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:04,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 4173 transitions. [2021-06-05 13:12:04,496 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 4173 transitions. Word has length 26 [2021-06-05 13:12:04,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:04,496 INFO L482 AbstractCegarLoop]: Abstraction has 1372 states and 4173 transitions. [2021-06-05 13:12:04,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:04,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 4173 transitions. [2021-06-05 13:12:04,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:04,498 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:04,498 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:04,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-05 13:12:04,498 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:04,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:04,499 INFO L82 PathProgramCache]: Analyzing trace with hash 652041818, now seen corresponding path program 62 times [2021-06-05 13:12:04,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:04,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602427637] [2021-06-05 13:12:04,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:04,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:04,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602427637] [2021-06-05 13:12:04,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602427637] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:04,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:04,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:04,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308614525] [2021-06-05 13:12:04,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:04,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:04,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:04,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:04,584 INFO L87 Difference]: Start difference. First operand 1372 states and 4173 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:04,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:04,821 INFO L93 Difference]: Finished difference Result 1591 states and 4779 transitions. [2021-06-05 13:12:04,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:04,821 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:04,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:04,824 INFO L225 Difference]: With dead ends: 1591 [2021-06-05 13:12:04,824 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 13:12:04,825 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:04,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 13:12:04,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1377. [2021-06-05 13:12:04,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 3.0450581395348837) internal successors, (4190), 1376 states have internal predecessors, (4190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 4190 transitions. [2021-06-05 13:12:04,849 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 4190 transitions. Word has length 26 [2021-06-05 13:12:04,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:04,849 INFO L482 AbstractCegarLoop]: Abstraction has 1377 states and 4190 transitions. [2021-06-05 13:12:04,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:04,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 4190 transitions. [2021-06-05 13:12:04,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:04,852 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:04,852 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:04,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-05 13:12:04,852 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:04,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:04,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1238592666, now seen corresponding path program 63 times [2021-06-05 13:12:04,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:04,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815241965] [2021-06-05 13:12:04,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:04,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:04,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:04,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815241965] [2021-06-05 13:12:04,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815241965] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:04,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:04,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:04,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697755935] [2021-06-05 13:12:04,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:04,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:04,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:04,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:04,953 INFO L87 Difference]: Start difference. First operand 1377 states and 4190 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:05,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:05,183 INFO L93 Difference]: Finished difference Result 1579 states and 4742 transitions. [2021-06-05 13:12:05,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:05,183 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:05,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:05,185 INFO L225 Difference]: With dead ends: 1579 [2021-06-05 13:12:05,185 INFO L226 Difference]: Without dead ends: 1491 [2021-06-05 13:12:05,185 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:05,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-06-05 13:12:05,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1383. [2021-06-05 13:12:05,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 3.045586107091172) internal successors, (4209), 1382 states have internal predecessors, (4209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:05,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 4209 transitions. [2021-06-05 13:12:05,203 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 4209 transitions. Word has length 26 [2021-06-05 13:12:05,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:05,203 INFO L482 AbstractCegarLoop]: Abstraction has 1383 states and 4209 transitions. [2021-06-05 13:12:05,203 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:05,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 4209 transitions. [2021-06-05 13:12:05,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:05,205 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:05,205 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:05,205 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-05 13:12:05,206 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:05,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:05,206 INFO L82 PathProgramCache]: Analyzing trace with hash 526524824, now seen corresponding path program 64 times [2021-06-05 13:12:05,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:05,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10831683] [2021-06-05 13:12:05,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:05,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:05,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10831683] [2021-06-05 13:12:05,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10831683] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:05,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:05,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:05,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136199841] [2021-06-05 13:12:05,282 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:05,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:05,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:05,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:05,283 INFO L87 Difference]: Start difference. First operand 1383 states and 4209 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:05,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:05,478 INFO L93 Difference]: Finished difference Result 1558 states and 4681 transitions. [2021-06-05 13:12:05,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:05,479 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:05,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:05,481 INFO L225 Difference]: With dead ends: 1558 [2021-06-05 13:12:05,481 INFO L226 Difference]: Without dead ends: 1464 [2021-06-05 13:12:05,482 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:05,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-06-05 13:12:05,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1385. [2021-06-05 13:12:05,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1385 states, 1384 states have (on average 3.046965317919075) internal successors, (4217), 1384 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:05,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 4217 transitions. [2021-06-05 13:12:05,501 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 4217 transitions. Word has length 26 [2021-06-05 13:12:05,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:05,501 INFO L482 AbstractCegarLoop]: Abstraction has 1385 states and 4217 transitions. [2021-06-05 13:12:05,501 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:05,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 4217 transitions. [2021-06-05 13:12:05,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:05,502 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:05,502 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:05,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-05 13:12:05,502 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:05,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:05,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1617897750, now seen corresponding path program 65 times [2021-06-05 13:12:05,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:05,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372986719] [2021-06-05 13:12:05,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:05,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:05,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372986719] [2021-06-05 13:12:05,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372986719] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:05,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:05,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:05,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254905336] [2021-06-05 13:12:05,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:05,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:05,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:05,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:05,588 INFO L87 Difference]: Start difference. First operand 1385 states and 4217 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:05,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:05,786 INFO L93 Difference]: Finished difference Result 1534 states and 4620 transitions. [2021-06-05 13:12:05,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:05,786 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:05,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:05,788 INFO L225 Difference]: With dead ends: 1534 [2021-06-05 13:12:05,788 INFO L226 Difference]: Without dead ends: 1455 [2021-06-05 13:12:05,788 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:05,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-06-05 13:12:05,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1391. [2021-06-05 13:12:05,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 3.050359712230216) internal successors, (4240), 1390 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:05,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4240 transitions. [2021-06-05 13:12:05,810 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4240 transitions. Word has length 26 [2021-06-05 13:12:05,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:05,810 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 4240 transitions. [2021-06-05 13:12:05,810 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:05,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4240 transitions. [2021-06-05 13:12:05,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:05,812 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:05,812 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:05,812 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-05 13:12:05,812 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:05,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:05,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1807624938, now seen corresponding path program 66 times [2021-06-05 13:12:05,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:05,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460933243] [2021-06-05 13:12:05,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:05,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:05,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460933243] [2021-06-05 13:12:05,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460933243] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:05,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:05,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:05,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960959137] [2021-06-05 13:12:05,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:05,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:05,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:05,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:05,896 INFO L87 Difference]: Start difference. First operand 1391 states and 4240 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:06,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:06,076 INFO L93 Difference]: Finished difference Result 1569 states and 4729 transitions. [2021-06-05 13:12:06,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:06,077 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:06,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:06,079 INFO L225 Difference]: With dead ends: 1569 [2021-06-05 13:12:06,079 INFO L226 Difference]: Without dead ends: 1474 [2021-06-05 13:12:06,079 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:06,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-06-05 13:12:06,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1400. [2021-06-05 13:12:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 3.0528949249463904) internal successors, (4271), 1399 states have internal predecessors, (4271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:06,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 4271 transitions. [2021-06-05 13:12:06,095 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 4271 transitions. Word has length 26 [2021-06-05 13:12:06,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:06,095 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 4271 transitions. [2021-06-05 13:12:06,095 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:06,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 4271 transitions. [2021-06-05 13:12:06,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:06,097 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:06,097 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:06,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-05 13:12:06,097 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:06,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:06,097 INFO L82 PathProgramCache]: Analyzing trace with hash 113058932, now seen corresponding path program 67 times [2021-06-05 13:12:06,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:06,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351649860] [2021-06-05 13:12:06,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:06,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:06,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351649860] [2021-06-05 13:12:06,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351649860] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:06,180 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:06,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:06,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888204790] [2021-06-05 13:12:06,180 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:06,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:06,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:06,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:06,180 INFO L87 Difference]: Start difference. First operand 1400 states and 4271 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:06,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:06,364 INFO L93 Difference]: Finished difference Result 1559 states and 4705 transitions. [2021-06-05 13:12:06,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:06,364 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:06,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:06,366 INFO L225 Difference]: With dead ends: 1559 [2021-06-05 13:12:06,366 INFO L226 Difference]: Without dead ends: 1474 [2021-06-05 13:12:06,367 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:06,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-06-05 13:12:06,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1404. [2021-06-05 13:12:06,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.050605844618674) internal successors, (4280), 1403 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:06,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 4280 transitions. [2021-06-05 13:12:06,383 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 4280 transitions. Word has length 26 [2021-06-05 13:12:06,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:06,383 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 4280 transitions. [2021-06-05 13:12:06,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:06,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 4280 transitions. [2021-06-05 13:12:06,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:06,384 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:06,384 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:06,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-05 13:12:06,385 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:06,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:06,385 INFO L82 PathProgramCache]: Analyzing trace with hash -2061970672, now seen corresponding path program 68 times [2021-06-05 13:12:06,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:06,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919433427] [2021-06-05 13:12:06,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:06,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:06,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:06,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919433427] [2021-06-05 13:12:06,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919433427] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:06,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:06,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:06,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153377077] [2021-06-05 13:12:06,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:06,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:06,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:06,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:06,461 INFO L87 Difference]: Start difference. First operand 1404 states and 4280 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:06,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:06,639 INFO L93 Difference]: Finished difference Result 1599 states and 4818 transitions. [2021-06-05 13:12:06,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:06,640 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:06,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:06,642 INFO L225 Difference]: With dead ends: 1599 [2021-06-05 13:12:06,642 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 13:12:06,642 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:06,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 13:12:06,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1402. [2021-06-05 13:12:06,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 3.054960742326909) internal successors, (4280), 1401 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:06,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 4280 transitions. [2021-06-05 13:12:06,659 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 4280 transitions. Word has length 26 [2021-06-05 13:12:06,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:06,660 INFO L482 AbstractCegarLoop]: Abstraction has 1402 states and 4280 transitions. [2021-06-05 13:12:06,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:06,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 4280 transitions. [2021-06-05 13:12:06,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:06,661 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:06,661 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:06,661 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-05 13:12:06,661 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:06,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:06,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1557110056, now seen corresponding path program 69 times [2021-06-05 13:12:06,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:06,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254564283] [2021-06-05 13:12:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:06,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:06,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254564283] [2021-06-05 13:12:06,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254564283] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:06,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:06,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:06,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646001400] [2021-06-05 13:12:06,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:06,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:06,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:06,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:06,734 INFO L87 Difference]: Start difference. First operand 1402 states and 4280 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:06,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:06,910 INFO L93 Difference]: Finished difference Result 1713 states and 5194 transitions. [2021-06-05 13:12:06,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:06,910 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:06,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:06,913 INFO L225 Difference]: With dead ends: 1713 [2021-06-05 13:12:06,913 INFO L226 Difference]: Without dead ends: 1634 [2021-06-05 13:12:06,913 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:06,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-06-05 13:12:06,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1411. [2021-06-05 13:12:06,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1410 states have (on average 3.0602836879432624) internal successors, (4315), 1410 states have internal predecessors, (4315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:06,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 4315 transitions. [2021-06-05 13:12:06,937 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 4315 transitions. Word has length 26 [2021-06-05 13:12:06,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:06,937 INFO L482 AbstractCegarLoop]: Abstraction has 1411 states and 4315 transitions. [2021-06-05 13:12:06,937 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:06,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 4315 transitions. [2021-06-05 13:12:06,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:06,938 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:06,939 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:06,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-05 13:12:06,939 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:06,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:06,939 INFO L82 PathProgramCache]: Analyzing trace with hash -2130507332, now seen corresponding path program 70 times [2021-06-05 13:12:06,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:06,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602010663] [2021-06-05 13:12:06,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:07,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:07,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602010663] [2021-06-05 13:12:07,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602010663] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:07,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:07,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:07,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005177001] [2021-06-05 13:12:07,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:07,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:07,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:07,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:07,017 INFO L87 Difference]: Start difference. First operand 1411 states and 4315 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:07,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:07,227 INFO L93 Difference]: Finished difference Result 1734 states and 5229 transitions. [2021-06-05 13:12:07,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:07,227 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:07,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:07,230 INFO L225 Difference]: With dead ends: 1734 [2021-06-05 13:12:07,230 INFO L226 Difference]: Without dead ends: 1639 [2021-06-05 13:12:07,230 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:07,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-06-05 13:12:07,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1415. [2021-06-05 13:12:07,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1414 states have (on average 3.0594059405940595) internal successors, (4326), 1414 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:07,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 4326 transitions. [2021-06-05 13:12:07,249 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 4326 transitions. Word has length 26 [2021-06-05 13:12:07,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:07,249 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 4326 transitions. [2021-06-05 13:12:07,249 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:07,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 4326 transitions. [2021-06-05 13:12:07,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:07,251 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:07,251 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:07,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-05 13:12:07,251 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:07,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:07,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1345712694, now seen corresponding path program 71 times [2021-06-05 13:12:07,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:07,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617167862] [2021-06-05 13:12:07,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:07,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:07,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617167862] [2021-06-05 13:12:07,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617167862] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:07,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:07,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:07,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314912864] [2021-06-05 13:12:07,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:07,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:07,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:07,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:07,323 INFO L87 Difference]: Start difference. First operand 1415 states and 4326 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:07,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:07,502 INFO L93 Difference]: Finished difference Result 1641 states and 4975 transitions. [2021-06-05 13:12:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:07,502 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:07,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:07,505 INFO L225 Difference]: With dead ends: 1641 [2021-06-05 13:12:07,505 INFO L226 Difference]: Without dead ends: 1551 [2021-06-05 13:12:07,506 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:07,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2021-06-05 13:12:07,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1409. [2021-06-05 13:12:07,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1408 states have (on average 3.061789772727273) internal successors, (4311), 1408 states have internal predecessors, (4311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:07,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 4311 transitions. [2021-06-05 13:12:07,529 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 4311 transitions. Word has length 26 [2021-06-05 13:12:07,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:07,529 INFO L482 AbstractCegarLoop]: Abstraction has 1409 states and 4311 transitions. [2021-06-05 13:12:07,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:07,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 4311 transitions. [2021-06-05 13:12:07,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:07,531 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:07,531 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:07,531 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-05 13:12:07,531 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:07,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:07,532 INFO L82 PathProgramCache]: Analyzing trace with hash 970699354, now seen corresponding path program 72 times [2021-06-05 13:12:07,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:07,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623896208] [2021-06-05 13:12:07,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:07,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:07,593 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:07,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623896208] [2021-06-05 13:12:07,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623896208] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:07,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:07,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:07,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151888879] [2021-06-05 13:12:07,594 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:07,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:07,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:07,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:07,594 INFO L87 Difference]: Start difference. First operand 1409 states and 4311 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:07,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:07,743 INFO L93 Difference]: Finished difference Result 1735 states and 5254 transitions. [2021-06-05 13:12:07,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:07,744 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:07,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:07,746 INFO L225 Difference]: With dead ends: 1735 [2021-06-05 13:12:07,746 INFO L226 Difference]: Without dead ends: 1656 [2021-06-05 13:12:07,746 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:07,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2021-06-05 13:12:07,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1445. [2021-06-05 13:12:07,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 3.059556786703601) internal successors, (4418), 1444 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:07,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 4418 transitions. [2021-06-05 13:12:07,764 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 4418 transitions. Word has length 26 [2021-06-05 13:12:07,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:07,764 INFO L482 AbstractCegarLoop]: Abstraction has 1445 states and 4418 transitions. [2021-06-05 13:12:07,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:07,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 4418 transitions. [2021-06-05 13:12:07,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:07,765 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:07,765 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:07,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-05 13:12:07,765 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:07,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:07,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1840143962, now seen corresponding path program 73 times [2021-06-05 13:12:07,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:07,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330789230] [2021-06-05 13:12:07,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:07,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:07,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330789230] [2021-06-05 13:12:07,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330789230] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:07,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:07,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:07,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541763815] [2021-06-05 13:12:07,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:07,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:07,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:07,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:07,852 INFO L87 Difference]: Start difference. First operand 1445 states and 4418 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:08,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:08,066 INFO L93 Difference]: Finished difference Result 1792 states and 5392 transitions. [2021-06-05 13:12:08,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:08,066 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:08,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:08,069 INFO L225 Difference]: With dead ends: 1792 [2021-06-05 13:12:08,069 INFO L226 Difference]: Without dead ends: 1611 [2021-06-05 13:12:08,070 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:08,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2021-06-05 13:12:08,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1435. [2021-06-05 13:12:08,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 1434 states have (on average 3.0641562064156207) internal successors, (4394), 1434 states have internal predecessors, (4394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:08,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 4394 transitions. [2021-06-05 13:12:08,092 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 4394 transitions. Word has length 26 [2021-06-05 13:12:08,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:08,092 INFO L482 AbstractCegarLoop]: Abstraction has 1435 states and 4394 transitions. [2021-06-05 13:12:08,092 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:08,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 4394 transitions. [2021-06-05 13:12:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:08,094 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:08,094 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:08,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-05 13:12:08,095 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:08,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:08,095 INFO L82 PathProgramCache]: Analyzing trace with hash -747041416, now seen corresponding path program 74 times [2021-06-05 13:12:08,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:08,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936381685] [2021-06-05 13:12:08,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:08,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:08,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:08,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936381685] [2021-06-05 13:12:08,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936381685] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:08,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:08,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:08,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432389474] [2021-06-05 13:12:08,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:08,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:08,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:08,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:08,165 INFO L87 Difference]: Start difference. First operand 1435 states and 4394 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:08,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:08,371 INFO L93 Difference]: Finished difference Result 1663 states and 5025 transitions. [2021-06-05 13:12:08,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:08,372 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:08,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:08,375 INFO L225 Difference]: With dead ends: 1663 [2021-06-05 13:12:08,375 INFO L226 Difference]: Without dead ends: 1584 [2021-06-05 13:12:08,375 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:08,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-06-05 13:12:08,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1437. [2021-06-05 13:12:08,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1436 states have (on average 3.0647632311977717) internal successors, (4401), 1436 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:08,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 4401 transitions. [2021-06-05 13:12:08,397 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 4401 transitions. Word has length 26 [2021-06-05 13:12:08,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:08,397 INFO L482 AbstractCegarLoop]: Abstraction has 1437 states and 4401 transitions. [2021-06-05 13:12:08,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:08,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 4401 transitions. [2021-06-05 13:12:08,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:08,400 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:08,400 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:08,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-05 13:12:08,400 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:08,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:08,401 INFO L82 PathProgramCache]: Analyzing trace with hash 122403192, now seen corresponding path program 75 times [2021-06-05 13:12:08,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:08,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186661620] [2021-06-05 13:12:08,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:08,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:08,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:08,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186661620] [2021-06-05 13:12:08,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186661620] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:08,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:08,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:08,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087505898] [2021-06-05 13:12:08,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:08,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:08,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:08,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:08,474 INFO L87 Difference]: Start difference. First operand 1437 states and 4401 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:08,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:08,695 INFO L93 Difference]: Finished difference Result 1626 states and 4884 transitions. [2021-06-05 13:12:08,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:08,695 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:08,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:08,698 INFO L225 Difference]: With dead ends: 1626 [2021-06-05 13:12:08,698 INFO L226 Difference]: Without dead ends: 1531 [2021-06-05 13:12:08,699 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:08,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2021-06-05 13:12:08,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1451. [2021-06-05 13:12:08,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1450 states have (on average 3.0606896551724136) internal successors, (4438), 1450 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:08,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 4438 transitions. [2021-06-05 13:12:08,722 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 4438 transitions. Word has length 26 [2021-06-05 13:12:08,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:08,723 INFO L482 AbstractCegarLoop]: Abstraction has 1451 states and 4438 transitions. [2021-06-05 13:12:08,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:08,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 4438 transitions. [2021-06-05 13:12:08,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:08,725 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:08,725 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:08,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-05 13:12:08,725 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:08,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:08,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1919705314, now seen corresponding path program 76 times [2021-06-05 13:12:08,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:08,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104968120] [2021-06-05 13:12:08,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:08,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:08,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:08,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104968120] [2021-06-05 13:12:08,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104968120] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:08,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:08,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:08,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539189205] [2021-06-05 13:12:08,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:08,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:08,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:08,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:08,788 INFO L87 Difference]: Start difference. First operand 1451 states and 4438 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:08,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:08,936 INFO L93 Difference]: Finished difference Result 1742 states and 5269 transitions. [2021-06-05 13:12:08,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:08,937 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:08,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:08,939 INFO L225 Difference]: With dead ends: 1742 [2021-06-05 13:12:08,939 INFO L226 Difference]: Without dead ends: 1653 [2021-06-05 13:12:08,939 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:08,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2021-06-05 13:12:08,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1461. [2021-06-05 13:12:08,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1460 states have (on average 3.0595890410958906) internal successors, (4467), 1460 states have internal predecessors, (4467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:08,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4467 transitions. [2021-06-05 13:12:08,963 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4467 transitions. Word has length 26 [2021-06-05 13:12:08,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:08,963 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4467 transitions. [2021-06-05 13:12:08,963 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:08,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4467 transitions. [2021-06-05 13:12:08,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:08,968 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:08,968 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:08,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-05 13:12:08,968 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:08,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:08,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1333154466, now seen corresponding path program 77 times [2021-06-05 13:12:08,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:08,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101035284] [2021-06-05 13:12:08,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:09,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:09,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:09,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101035284] [2021-06-05 13:12:09,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101035284] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:09,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:09,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:09,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706883612] [2021-06-05 13:12:09,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:09,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:09,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:09,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:09,041 INFO L87 Difference]: Start difference. First operand 1461 states and 4467 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:09,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:09,220 INFO L93 Difference]: Finished difference Result 1678 states and 5043 transitions. [2021-06-05 13:12:09,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:09,220 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:09,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:09,223 INFO L225 Difference]: With dead ends: 1678 [2021-06-05 13:12:09,223 INFO L226 Difference]: Without dead ends: 1590 [2021-06-05 13:12:09,223 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:09,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-06-05 13:12:09,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1461. [2021-06-05 13:12:09,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1460 states have (on average 3.0595890410958906) internal successors, (4467), 1460 states have internal predecessors, (4467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:09,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4467 transitions. [2021-06-05 13:12:09,240 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4467 transitions. Word has length 26 [2021-06-05 13:12:09,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:09,240 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4467 transitions. [2021-06-05 13:12:09,240 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:09,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4467 transitions. [2021-06-05 13:12:09,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:09,241 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:09,242 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:09,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-05 13:12:09,242 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:09,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:09,242 INFO L82 PathProgramCache]: Analyzing trace with hash -2045222308, now seen corresponding path program 78 times [2021-06-05 13:12:09,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:09,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737409977] [2021-06-05 13:12:09,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:09,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:09,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:09,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737409977] [2021-06-05 13:12:09,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737409977] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:09,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:09,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:09,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700635898] [2021-06-05 13:12:09,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:09,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:09,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:09,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:09,315 INFO L87 Difference]: Start difference. First operand 1461 states and 4467 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:09,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:09,493 INFO L93 Difference]: Finished difference Result 1816 states and 5475 transitions. [2021-06-05 13:12:09,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:09,493 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:09,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:09,496 INFO L225 Difference]: With dead ends: 1816 [2021-06-05 13:12:09,496 INFO L226 Difference]: Without dead ends: 1722 [2021-06-05 13:12:09,496 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:09,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-06-05 13:12:09,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1485. [2021-06-05 13:12:09,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1484 states have (on average 3.0633423180592994) internal successors, (4546), 1484 states have internal predecessors, (4546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:09,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4546 transitions. [2021-06-05 13:12:09,514 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4546 transitions. Word has length 26 [2021-06-05 13:12:09,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:09,514 INFO L482 AbstractCegarLoop]: Abstraction has 1485 states and 4546 transitions. [2021-06-05 13:12:09,514 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:09,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4546 transitions. [2021-06-05 13:12:09,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:09,515 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:09,515 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:09,515 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-05 13:12:09,516 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:09,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:09,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1286512978, now seen corresponding path program 79 times [2021-06-05 13:12:09,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:09,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321117733] [2021-06-05 13:12:09,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:09,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:09,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:09,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321117733] [2021-06-05 13:12:09,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321117733] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:09,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:09,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:09,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809128504] [2021-06-05 13:12:09,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:09,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:09,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:09,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:09,585 INFO L87 Difference]: Start difference. First operand 1485 states and 4546 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:09,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:09,761 INFO L93 Difference]: Finished difference Result 1851 states and 5576 transitions. [2021-06-05 13:12:09,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:09,761 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:09,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:09,764 INFO L225 Difference]: With dead ends: 1851 [2021-06-05 13:12:09,765 INFO L226 Difference]: Without dead ends: 1679 [2021-06-05 13:12:09,765 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:09,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2021-06-05 13:12:09,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1453. [2021-06-05 13:12:09,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1452 states have (on average 3.0550964187327825) internal successors, (4436), 1452 states have internal predecessors, (4436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:09,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 4436 transitions. [2021-06-05 13:12:09,789 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 4436 transitions. Word has length 26 [2021-06-05 13:12:09,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:09,789 INFO L482 AbstractCegarLoop]: Abstraction has 1453 states and 4436 transitions. [2021-06-05 13:12:09,789 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:09,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 4436 transitions. [2021-06-05 13:12:09,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:09,791 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:09,791 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:09,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-05 13:12:09,791 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:09,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:09,791 INFO L82 PathProgramCache]: Analyzing trace with hash -292918668, now seen corresponding path program 80 times [2021-06-05 13:12:09,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:09,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783212503] [2021-06-05 13:12:09,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:09,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:09,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:09,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783212503] [2021-06-05 13:12:09,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783212503] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:09,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:09,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:09,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030154985] [2021-06-05 13:12:09,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:09,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:09,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:09,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:09,866 INFO L87 Difference]: Start difference. First operand 1453 states and 4436 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:10,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:10,041 INFO L93 Difference]: Finished difference Result 1732 states and 5178 transitions. [2021-06-05 13:12:10,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:10,041 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:10,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:10,044 INFO L225 Difference]: With dead ends: 1732 [2021-06-05 13:12:10,044 INFO L226 Difference]: Without dead ends: 1593 [2021-06-05 13:12:10,044 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:10,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2021-06-05 13:12:10,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1443. [2021-06-05 13:12:10,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 3.0485436893203883) internal successors, (4396), 1442 states have internal predecessors, (4396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:10,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 4396 transitions. [2021-06-05 13:12:10,060 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 4396 transitions. Word has length 26 [2021-06-05 13:12:10,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:10,060 INFO L482 AbstractCegarLoop]: Abstraction has 1443 states and 4396 transitions. [2021-06-05 13:12:10,060 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:10,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 4396 transitions. [2021-06-05 13:12:10,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:10,065 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:10,065 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:10,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-05 13:12:10,066 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:10,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:10,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1145380296, now seen corresponding path program 81 times [2021-06-05 13:12:10,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:10,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634650408] [2021-06-05 13:12:10,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:10,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:10,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634650408] [2021-06-05 13:12:10,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634650408] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:10,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:10,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:10,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658266805] [2021-06-05 13:12:10,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:10,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:10,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:10,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:10,135 INFO L87 Difference]: Start difference. First operand 1443 states and 4396 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:10,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:10,289 INFO L93 Difference]: Finished difference Result 1745 states and 5234 transitions. [2021-06-05 13:12:10,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:10,289 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:10,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:10,291 INFO L225 Difference]: With dead ends: 1745 [2021-06-05 13:12:10,291 INFO L226 Difference]: Without dead ends: 1660 [2021-06-05 13:12:10,291 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:10,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-06-05 13:12:10,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1481. [2021-06-05 13:12:10,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1480 states have (on average 3.050675675675676) internal successors, (4515), 1480 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:10,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4515 transitions. [2021-06-05 13:12:10,308 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4515 transitions. Word has length 26 [2021-06-05 13:12:10,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:10,308 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 4515 transitions. [2021-06-05 13:12:10,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:10,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4515 transitions. [2021-06-05 13:12:10,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:10,310 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:10,310 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:10,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-05 13:12:10,310 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:10,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:10,310 INFO L82 PathProgramCache]: Analyzing trace with hash -275935688, now seen corresponding path program 82 times [2021-06-05 13:12:10,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:10,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978838358] [2021-06-05 13:12:10,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:10,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:10,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978838358] [2021-06-05 13:12:10,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978838358] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:10,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:10,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:10,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122019777] [2021-06-05 13:12:10,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:10,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:10,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:10,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:10,396 INFO L87 Difference]: Start difference. First operand 1481 states and 4515 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:10,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:10,599 INFO L93 Difference]: Finished difference Result 1788 states and 5355 transitions. [2021-06-05 13:12:10,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:10,599 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:10,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:10,602 INFO L225 Difference]: With dead ends: 1788 [2021-06-05 13:12:10,603 INFO L226 Difference]: Without dead ends: 1595 [2021-06-05 13:12:10,603 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:10,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2021-06-05 13:12:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1441. [2021-06-05 13:12:10,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1440 states have (on average 3.0479166666666666) internal successors, (4389), 1440 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:10,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 4389 transitions. [2021-06-05 13:12:10,626 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 4389 transitions. Word has length 26 [2021-06-05 13:12:10,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:10,626 INFO L482 AbstractCegarLoop]: Abstraction has 1441 states and 4389 transitions. [2021-06-05 13:12:10,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:10,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 4389 transitions. [2021-06-05 13:12:10,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:10,628 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:10,628 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:10,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-05 13:12:10,629 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:10,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:10,630 INFO L82 PathProgramCache]: Analyzing trace with hash -263995784, now seen corresponding path program 83 times [2021-06-05 13:12:10,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:10,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052548274] [2021-06-05 13:12:10,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:10,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:10,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052548274] [2021-06-05 13:12:10,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052548274] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:10,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:10,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:10,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927036476] [2021-06-05 13:12:10,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:10,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:10,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:10,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:10,707 INFO L87 Difference]: Start difference. First operand 1441 states and 4389 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:10,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:10,928 INFO L93 Difference]: Finished difference Result 1658 states and 4979 transitions. [2021-06-05 13:12:10,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:10,928 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:10,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:10,930 INFO L225 Difference]: With dead ends: 1658 [2021-06-05 13:12:10,930 INFO L226 Difference]: Without dead ends: 1573 [2021-06-05 13:12:10,931 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:10,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-06-05 13:12:10,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1444. [2021-06-05 13:12:10,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.047124047124047) internal successors, (4397), 1443 states have internal predecessors, (4397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:10,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4397 transitions. [2021-06-05 13:12:10,948 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4397 transitions. Word has length 26 [2021-06-05 13:12:10,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:10,948 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 4397 transitions. [2021-06-05 13:12:10,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:10,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4397 transitions. [2021-06-05 13:12:10,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:10,949 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:10,950 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:10,950 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-05 13:12:10,950 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:10,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:10,950 INFO L82 PathProgramCache]: Analyzing trace with hash 605448824, now seen corresponding path program 84 times [2021-06-05 13:12:10,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:10,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503859082] [2021-06-05 13:12:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:11,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:11,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503859082] [2021-06-05 13:12:11,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503859082] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:11,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:11,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:11,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380431509] [2021-06-05 13:12:11,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:11,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:11,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:11,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:11,023 INFO L87 Difference]: Start difference. First operand 1444 states and 4397 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:11,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:11,212 INFO L93 Difference]: Finished difference Result 1729 states and 5190 transitions. [2021-06-05 13:12:11,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:11,212 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:11,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:11,214 INFO L225 Difference]: With dead ends: 1729 [2021-06-05 13:12:11,214 INFO L226 Difference]: Without dead ends: 1634 [2021-06-05 13:12:11,215 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:11,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-06-05 13:12:11,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1464. [2021-06-05 13:12:11,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 3.0457963089542037) internal successors, (4456), 1463 states have internal predecessors, (4456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:11,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4456 transitions. [2021-06-05 13:12:11,232 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4456 transitions. Word has length 26 [2021-06-05 13:12:11,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:11,232 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 4456 transitions. [2021-06-05 13:12:11,232 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:11,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4456 transitions. [2021-06-05 13:12:11,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:11,234 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:11,234 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:11,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-05 13:12:11,234 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:11,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:11,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1417651412, now seen corresponding path program 85 times [2021-06-05 13:12:11,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:11,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612381654] [2021-06-05 13:12:11,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:11,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:11,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:11,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612381654] [2021-06-05 13:12:11,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612381654] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:11,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:11,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:11,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250103376] [2021-06-05 13:12:11,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:11,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:11,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:11,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:11,309 INFO L87 Difference]: Start difference. First operand 1464 states and 4456 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:11,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:11,499 INFO L93 Difference]: Finished difference Result 1739 states and 5230 transitions. [2021-06-05 13:12:11,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:11,499 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:11,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:11,502 INFO L225 Difference]: With dead ends: 1739 [2021-06-05 13:12:11,502 INFO L226 Difference]: Without dead ends: 1609 [2021-06-05 13:12:11,502 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:11,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2021-06-05 13:12:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1469. [2021-06-05 13:12:11,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1468 states have (on average 3.034059945504087) internal successors, (4454), 1468 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:11,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 4454 transitions. [2021-06-05 13:12:11,519 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 4454 transitions. Word has length 26 [2021-06-05 13:12:11,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:11,519 INFO L482 AbstractCegarLoop]: Abstraction has 1469 states and 4454 transitions. [2021-06-05 13:12:11,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:11,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 4454 transitions. [2021-06-05 13:12:11,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:11,521 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:11,521 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:11,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-05 13:12:11,521 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:11,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:11,521 INFO L82 PathProgramCache]: Analyzing trace with hash -472077802, now seen corresponding path program 86 times [2021-06-05 13:12:11,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:11,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025746967] [2021-06-05 13:12:11,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:11,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:11,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025746967] [2021-06-05 13:12:11,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025746967] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:11,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:11,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:11,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081069220] [2021-06-05 13:12:11,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:11,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:11,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:11,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:11,596 INFO L87 Difference]: Start difference. First operand 1469 states and 4454 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:11,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:11,805 INFO L93 Difference]: Finished difference Result 1598 states and 4788 transitions. [2021-06-05 13:12:11,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:11,805 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:11,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:11,808 INFO L225 Difference]: With dead ends: 1598 [2021-06-05 13:12:11,808 INFO L226 Difference]: Without dead ends: 1519 [2021-06-05 13:12:11,808 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:11,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2021-06-05 13:12:11,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1469. [2021-06-05 13:12:11,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1468 states have (on average 3.034059945504087) internal successors, (4454), 1468 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:11,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 4454 transitions. [2021-06-05 13:12:11,831 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 4454 transitions. Word has length 26 [2021-06-05 13:12:11,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:11,831 INFO L482 AbstractCegarLoop]: Abstraction has 1469 states and 4454 transitions. [2021-06-05 13:12:11,831 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:11,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 4454 transitions. [2021-06-05 13:12:11,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:11,834 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:11,834 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:11,834 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-05 13:12:11,834 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:11,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:11,834 INFO L82 PathProgramCache]: Analyzing trace with hash 397366806, now seen corresponding path program 87 times [2021-06-05 13:12:11,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:11,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485234215] [2021-06-05 13:12:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:11,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:11,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:11,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485234215] [2021-06-05 13:12:11,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485234215] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:11,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:11,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:11,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044429651] [2021-06-05 13:12:11,908 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:11,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:11,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:11,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:11,909 INFO L87 Difference]: Start difference. First operand 1469 states and 4454 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:12,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:12,117 INFO L93 Difference]: Finished difference Result 1617 states and 4837 transitions. [2021-06-05 13:12:12,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:12,118 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:12,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:12,121 INFO L225 Difference]: With dead ends: 1617 [2021-06-05 13:12:12,121 INFO L226 Difference]: Without dead ends: 1522 [2021-06-05 13:12:12,121 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:12,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-06-05 13:12:12,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1471. [2021-06-05 13:12:12,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1470 states have (on average 3.033333333333333) internal successors, (4459), 1470 states have internal predecessors, (4459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:12,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 4459 transitions. [2021-06-05 13:12:12,144 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 4459 transitions. Word has length 26 [2021-06-05 13:12:12,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:12,144 INFO L482 AbstractCegarLoop]: Abstraction has 1471 states and 4459 transitions. [2021-06-05 13:12:12,144 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:12,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 4459 transitions. [2021-06-05 13:12:12,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:12,146 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:12,146 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:12,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-05 13:12:12,147 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:12,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:12,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1071344424, now seen corresponding path program 88 times [2021-06-05 13:12:12,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:12,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765420036] [2021-06-05 13:12:12,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:12,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:12,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:12,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765420036] [2021-06-05 13:12:12,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765420036] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:12,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:12,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:12,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682427065] [2021-06-05 13:12:12,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:12,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:12,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:12,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:12,222 INFO L87 Difference]: Start difference. First operand 1471 states and 4459 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:12,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:12,409 INFO L93 Difference]: Finished difference Result 1682 states and 5045 transitions. [2021-06-05 13:12:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:12,410 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:12,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:12,412 INFO L225 Difference]: With dead ends: 1682 [2021-06-05 13:12:12,412 INFO L226 Difference]: Without dead ends: 1603 [2021-06-05 13:12:12,412 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:12,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2021-06-05 13:12:12,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1470. [2021-06-05 13:12:12,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.0326752893124573) internal successors, (4455), 1469 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:12,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4455 transitions. [2021-06-05 13:12:12,429 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4455 transitions. Word has length 26 [2021-06-05 13:12:12,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:12,429 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4455 transitions. [2021-06-05 13:12:12,429 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:12,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4455 transitions. [2021-06-05 13:12:12,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:12,431 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:12,431 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:12,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-05 13:12:12,431 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:12,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:12,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1644741700, now seen corresponding path program 89 times [2021-06-05 13:12:12,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:12,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254807026] [2021-06-05 13:12:12,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:12,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:12,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:12,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254807026] [2021-06-05 13:12:12,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254807026] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:12,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:12,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:12,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609892847] [2021-06-05 13:12:12,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:12,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:12,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:12,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:12,502 INFO L87 Difference]: Start difference. First operand 1470 states and 4455 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:12,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:12,683 INFO L93 Difference]: Finished difference Result 1669 states and 5007 transitions. [2021-06-05 13:12:12,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:12,684 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:12,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:12,686 INFO L225 Difference]: With dead ends: 1669 [2021-06-05 13:12:12,686 INFO L226 Difference]: Without dead ends: 1580 [2021-06-05 13:12:12,686 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:12,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-06-05 13:12:12,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1469. [2021-06-05 13:12:12,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1468 states have (on average 3.0306539509536785) internal successors, (4449), 1468 states have internal predecessors, (4449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 4449 transitions. [2021-06-05 13:12:12,703 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 4449 transitions. Word has length 26 [2021-06-05 13:12:12,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:12,703 INFO L482 AbstractCegarLoop]: Abstraction has 1469 states and 4449 transitions. [2021-06-05 13:12:12,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:12,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 4449 transitions. [2021-06-05 13:12:12,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:12,705 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:12,705 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:12,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-05 13:12:12,705 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:12,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:12,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1058190852, now seen corresponding path program 90 times [2021-06-05 13:12:12,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:12,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492470294] [2021-06-05 13:12:12,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:12,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:12,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492470294] [2021-06-05 13:12:12,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492470294] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:12,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:12,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:12,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158980235] [2021-06-05 13:12:12,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:12,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:12,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:12,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:12,778 INFO L87 Difference]: Start difference. First operand 1469 states and 4449 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:12,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:12,985 INFO L93 Difference]: Finished difference Result 1654 states and 4951 transitions. [2021-06-05 13:12:12,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:12,986 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:12,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:12,989 INFO L225 Difference]: With dead ends: 1654 [2021-06-05 13:12:12,989 INFO L226 Difference]: Without dead ends: 1566 [2021-06-05 13:12:12,989 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:12,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-06-05 13:12:13,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1470. [2021-06-05 13:12:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.0313138189244384) internal successors, (4453), 1469 states have internal predecessors, (4453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:13,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4453 transitions. [2021-06-05 13:12:13,011 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4453 transitions. Word has length 26 [2021-06-05 13:12:13,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:13,011 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4453 transitions. [2021-06-05 13:12:13,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:13,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4453 transitions. [2021-06-05 13:12:13,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:13,013 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:13,014 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:13,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-05 13:12:13,014 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:13,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:13,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1770258694, now seen corresponding path program 91 times [2021-06-05 13:12:13,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:13,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996430821] [2021-06-05 13:12:13,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:13,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:13,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:13,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996430821] [2021-06-05 13:12:13,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996430821] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:13,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:13,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:13,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082396519] [2021-06-05 13:12:13,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:13,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:13,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:13,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:13,087 INFO L87 Difference]: Start difference. First operand 1470 states and 4453 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:13,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:13,272 INFO L93 Difference]: Finished difference Result 1673 states and 4993 transitions. [2021-06-05 13:12:13,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:13,273 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:13,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:13,275 INFO L225 Difference]: With dead ends: 1673 [2021-06-05 13:12:13,275 INFO L226 Difference]: Without dead ends: 1579 [2021-06-05 13:12:13,275 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:13,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-06-05 13:12:13,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1475. [2021-06-05 13:12:13,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1474 states have (on average 3.03527815468114) internal successors, (4474), 1474 states have internal predecessors, (4474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:13,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4474 transitions. [2021-06-05 13:12:13,291 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4474 transitions. Word has length 26 [2021-06-05 13:12:13,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:13,291 INFO L482 AbstractCegarLoop]: Abstraction has 1475 states and 4474 transitions. [2021-06-05 13:12:13,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:13,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4474 transitions. [2021-06-05 13:12:13,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:13,293 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:13,293 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:13,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-05 13:12:13,293 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:13,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:13,293 INFO L82 PathProgramCache]: Analyzing trace with hash -678885768, now seen corresponding path program 92 times [2021-06-05 13:12:13,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:13,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466759409] [2021-06-05 13:12:13,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:13,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:13,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466759409] [2021-06-05 13:12:13,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466759409] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:13,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:13,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:13,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019077171] [2021-06-05 13:12:13,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:13,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:13,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:13,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:13,367 INFO L87 Difference]: Start difference. First operand 1475 states and 4474 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:13,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:13,548 INFO L93 Difference]: Finished difference Result 1627 states and 4876 transitions. [2021-06-05 13:12:13,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:13,548 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:13,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:13,550 INFO L225 Difference]: With dead ends: 1627 [2021-06-05 13:12:13,550 INFO L226 Difference]: Without dead ends: 1548 [2021-06-05 13:12:13,551 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:13,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-06-05 13:12:13,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1475. [2021-06-05 13:12:13,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1474 states have (on average 3.03527815468114) internal successors, (4474), 1474 states have internal predecessors, (4474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:13,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4474 transitions. [2021-06-05 13:12:13,567 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4474 transitions. Word has length 26 [2021-06-05 13:12:13,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:13,567 INFO L482 AbstractCegarLoop]: Abstraction has 1475 states and 4474 transitions. [2021-06-05 13:12:13,567 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:13,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4474 transitions. [2021-06-05 13:12:13,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:13,569 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:13,569 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:13,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-05 13:12:13,569 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:13,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:13,569 INFO L82 PathProgramCache]: Analyzing trace with hash 190558840, now seen corresponding path program 93 times [2021-06-05 13:12:13,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:13,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023172631] [2021-06-05 13:12:13,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:13,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:13,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023172631] [2021-06-05 13:12:13,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023172631] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:13,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:13,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:13,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807228432] [2021-06-05 13:12:13,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:13,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:13,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:13,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:13,645 INFO L87 Difference]: Start difference. First operand 1475 states and 4474 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:13,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:13,832 INFO L93 Difference]: Finished difference Result 1646 states and 4929 transitions. [2021-06-05 13:12:13,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:13,833 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:13,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:13,835 INFO L225 Difference]: With dead ends: 1646 [2021-06-05 13:12:13,835 INFO L226 Difference]: Without dead ends: 1551 [2021-06-05 13:12:13,835 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:13,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2021-06-05 13:12:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1478. [2021-06-05 13:12:13,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 3.034529451591063) internal successors, (4482), 1477 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:13,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 4482 transitions. [2021-06-05 13:12:13,859 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 4482 transitions. Word has length 26 [2021-06-05 13:12:13,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:13,859 INFO L482 AbstractCegarLoop]: Abstraction has 1478 states and 4482 transitions. [2021-06-05 13:12:13,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:13,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 4482 transitions. [2021-06-05 13:12:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:13,861 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:13,862 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:13,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-05 13:12:13,862 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:13,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:13,862 INFO L82 PathProgramCache]: Analyzing trace with hash 2111242710, now seen corresponding path program 94 times [2021-06-05 13:12:13,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:13,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135294118] [2021-06-05 13:12:13,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:13,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:13,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135294118] [2021-06-05 13:12:13,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135294118] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:13,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:13,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:13,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316610728] [2021-06-05 13:12:13,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:13,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:13,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:13,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:13,940 INFO L87 Difference]: Start difference. First operand 1478 states and 4482 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:14,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:14,117 INFO L93 Difference]: Finished difference Result 1664 states and 4981 transitions. [2021-06-05 13:12:14,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:14,117 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:14,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:14,120 INFO L225 Difference]: With dead ends: 1664 [2021-06-05 13:12:14,120 INFO L226 Difference]: Without dead ends: 1579 [2021-06-05 13:12:14,120 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:14,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-06-05 13:12:14,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1477. [2021-06-05 13:12:14,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1476 states have (on average 3.0318428184281845) internal successors, (4475), 1476 states have internal predecessors, (4475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:14,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 4475 transitions. [2021-06-05 13:12:14,137 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 4475 transitions. Word has length 26 [2021-06-05 13:12:14,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:14,137 INFO L482 AbstractCegarLoop]: Abstraction has 1477 states and 4475 transitions. [2021-06-05 13:12:14,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:14,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 4475 transitions. [2021-06-05 13:12:14,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:14,139 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:14,139 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:14,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-05 13:12:14,139 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:14,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:14,139 INFO L82 PathProgramCache]: Analyzing trace with hash -63786894, now seen corresponding path program 95 times [2021-06-05 13:12:14,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:14,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072768529] [2021-06-05 13:12:14,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:14,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:14,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:14,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072768529] [2021-06-05 13:12:14,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072768529] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:14,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:14,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:14,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645114918] [2021-06-05 13:12:14,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:14,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:14,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:14,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:14,217 INFO L87 Difference]: Start difference. First operand 1477 states and 4475 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:14,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:14,422 INFO L93 Difference]: Finished difference Result 1654 states and 4965 transitions. [2021-06-05 13:12:14,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:14,422 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:14,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:14,425 INFO L225 Difference]: With dead ends: 1654 [2021-06-05 13:12:14,425 INFO L226 Difference]: Without dead ends: 1554 [2021-06-05 13:12:14,425 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:14,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-06-05 13:12:14,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1475. [2021-06-05 13:12:14,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1474 states have (on average 3.0345997286295794) internal successors, (4473), 1474 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:14,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4473 transitions. [2021-06-05 13:12:14,449 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4473 transitions. Word has length 26 [2021-06-05 13:12:14,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:14,449 INFO L482 AbstractCegarLoop]: Abstraction has 1475 states and 4473 transitions. [2021-06-05 13:12:14,449 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:14,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4473 transitions. [2021-06-05 13:12:14,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:14,451 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:14,451 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:14,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-05 13:12:14,451 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:14,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:14,452 INFO L82 PathProgramCache]: Analyzing trace with hash -2121513890, now seen corresponding path program 96 times [2021-06-05 13:12:14,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:14,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000036137] [2021-06-05 13:12:14,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:14,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:14,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000036137] [2021-06-05 13:12:14,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000036137] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:14,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:14,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:14,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933473911] [2021-06-05 13:12:14,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:14,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:14,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:14,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:14,534 INFO L87 Difference]: Start difference. First operand 1475 states and 4473 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:14,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:14,712 INFO L93 Difference]: Finished difference Result 1649 states and 4952 transitions. [2021-06-05 13:12:14,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:14,712 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:14,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:14,715 INFO L225 Difference]: With dead ends: 1649 [2021-06-05 13:12:14,715 INFO L226 Difference]: Without dead ends: 1561 [2021-06-05 13:12:14,716 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:14,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-06-05 13:12:14,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1481. [2021-06-05 13:12:14,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1480 states have (on average 3.0344594594594594) internal successors, (4491), 1480 states have internal predecessors, (4491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:14,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4491 transitions. [2021-06-05 13:12:14,735 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4491 transitions. Word has length 26 [2021-06-05 13:12:14,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:14,735 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 4491 transitions. [2021-06-05 13:12:14,735 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:14,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4491 transitions. [2021-06-05 13:12:14,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:14,736 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:14,736 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:14,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-05 13:12:14,736 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:14,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:14,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1461385564, now seen corresponding path program 97 times [2021-06-05 13:12:14,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:14,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524164643] [2021-06-05 13:12:14,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:14,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:14,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:14,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524164643] [2021-06-05 13:12:14,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524164643] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:14,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:14,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:14,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457168228] [2021-06-05 13:12:14,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:14,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:14,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:14,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:14,830 INFO L87 Difference]: Start difference. First operand 1481 states and 4491 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:15,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:15,007 INFO L93 Difference]: Finished difference Result 1675 states and 4997 transitions. [2021-06-05 13:12:15,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:15,007 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:15,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:15,009 INFO L225 Difference]: With dead ends: 1675 [2021-06-05 13:12:15,010 INFO L226 Difference]: Without dead ends: 1583 [2021-06-05 13:12:15,010 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:15,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2021-06-05 13:12:15,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1479. [2021-06-05 13:12:15,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1478 states have (on average 3.031123139377537) internal successors, (4480), 1478 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:15,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 4480 transitions. [2021-06-05 13:12:15,026 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 4480 transitions. Word has length 26 [2021-06-05 13:12:15,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:15,026 INFO L482 AbstractCegarLoop]: Abstraction has 1479 states and 4480 transitions. [2021-06-05 13:12:15,026 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:15,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 4480 transitions. [2021-06-05 13:12:15,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:15,028 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:15,028 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:15,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-05 13:12:15,028 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:15,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:15,028 INFO L82 PathProgramCache]: Analyzing trace with hash 781308860, now seen corresponding path program 98 times [2021-06-05 13:12:15,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:15,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2656877] [2021-06-05 13:12:15,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:15,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:15,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2656877] [2021-06-05 13:12:15,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2656877] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:15,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:15,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:15,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401854702] [2021-06-05 13:12:15,101 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:15,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:15,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:15,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:15,102 INFO L87 Difference]: Start difference. First operand 1479 states and 4480 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:15,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:15,275 INFO L93 Difference]: Finished difference Result 1599 states and 4788 transitions. [2021-06-05 13:12:15,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:15,275 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:15,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:15,277 INFO L225 Difference]: With dead ends: 1599 [2021-06-05 13:12:15,278 INFO L226 Difference]: Without dead ends: 1480 [2021-06-05 13:12:15,278 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:15,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-06-05 13:12:15,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1444. [2021-06-05 13:12:15,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.044352044352044) internal successors, (4393), 1443 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:15,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4393 transitions. [2021-06-05 13:12:15,295 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4393 transitions. Word has length 26 [2021-06-05 13:12:15,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:15,296 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 4393 transitions. [2021-06-05 13:12:15,296 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:15,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4393 transitions. [2021-06-05 13:12:15,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:15,297 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:15,297 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:15,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-05 13:12:15,297 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:15,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:15,298 INFO L82 PathProgramCache]: Analyzing trace with hash -2101954, now seen corresponding path program 99 times [2021-06-05 13:12:15,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:15,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642993210] [2021-06-05 13:12:15,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:15,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:15,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642993210] [2021-06-05 13:12:15,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642993210] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:15,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:15,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 13:12:15,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909520815] [2021-06-05 13:12:15,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 13:12:15,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:15,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 13:12:15,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:12:15,347 INFO L87 Difference]: Start difference. First operand 1444 states and 4393 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:15,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:15,469 INFO L93 Difference]: Finished difference Result 1798 states and 5382 transitions. [2021-06-05 13:12:15,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 13:12:15,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:15,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:15,473 INFO L225 Difference]: With dead ends: 1798 [2021-06-05 13:12:15,473 INFO L226 Difference]: Without dead ends: 1641 [2021-06-05 13:12:15,473 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:12:15,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2021-06-05 13:12:15,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1518. [2021-06-05 13:12:15,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1517 states have (on average 3.03955174686882) internal successors, (4611), 1517 states have internal predecessors, (4611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 4611 transitions. [2021-06-05 13:12:15,498 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 4611 transitions. Word has length 26 [2021-06-05 13:12:15,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:15,498 INFO L482 AbstractCegarLoop]: Abstraction has 1518 states and 4611 transitions. [2021-06-05 13:12:15,498 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:15,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 4611 transitions. [2021-06-05 13:12:15,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:15,500 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:15,500 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:15,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-05 13:12:15,501 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:15,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:15,501 INFO L82 PathProgramCache]: Analyzing trace with hash -861686948, now seen corresponding path program 100 times [2021-06-05 13:12:15,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:15,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966376549] [2021-06-05 13:12:15,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:15,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:15,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966376549] [2021-06-05 13:12:15,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966376549] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:15,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:15,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:15,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372265084] [2021-06-05 13:12:15,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:15,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:15,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:15,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:15,561 INFO L87 Difference]: Start difference. First operand 1518 states and 4611 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:15,693 INFO L93 Difference]: Finished difference Result 1800 states and 5385 transitions. [2021-06-05 13:12:15,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:15,694 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:15,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:15,696 INFO L225 Difference]: With dead ends: 1800 [2021-06-05 13:12:15,696 INFO L226 Difference]: Without dead ends: 1650 [2021-06-05 13:12:15,696 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:15,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-06-05 13:12:15,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1502. [2021-06-05 13:12:15,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 3.0439706862091938) internal successors, (4569), 1501 states have internal predecessors, (4569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:15,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 4569 transitions. [2021-06-05 13:12:15,713 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 4569 transitions. Word has length 26 [2021-06-05 13:12:15,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:15,713 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 4569 transitions. [2021-06-05 13:12:15,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:15,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 4569 transitions. [2021-06-05 13:12:15,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:15,715 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:15,715 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:15,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-05 13:12:15,715 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:15,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:15,715 INFO L82 PathProgramCache]: Analyzing trace with hash -371708032, now seen corresponding path program 101 times [2021-06-05 13:12:15,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:15,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219153918] [2021-06-05 13:12:15,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:15,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:15,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219153918] [2021-06-05 13:12:15,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219153918] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:15,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:15,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:15,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906169426] [2021-06-05 13:12:15,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:15,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:15,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:15,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:15,784 INFO L87 Difference]: Start difference. First operand 1502 states and 4569 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:15,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:15,942 INFO L93 Difference]: Finished difference Result 1960 states and 5843 transitions. [2021-06-05 13:12:15,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:15,943 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:15,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:15,948 INFO L225 Difference]: With dead ends: 1960 [2021-06-05 13:12:15,948 INFO L226 Difference]: Without dead ends: 1674 [2021-06-05 13:12:15,948 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:15,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2021-06-05 13:12:15,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1624. [2021-06-05 13:12:15,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1623 states have (on average 2.9981515711645104) internal successors, (4866), 1623 states have internal predecessors, (4866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:15,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 4866 transitions. [2021-06-05 13:12:15,973 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 4866 transitions. Word has length 26 [2021-06-05 13:12:15,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:15,974 INFO L482 AbstractCegarLoop]: Abstraction has 1624 states and 4866 transitions. [2021-06-05 13:12:15,974 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:15,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 4866 transitions. [2021-06-05 13:12:15,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:15,976 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:15,976 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:15,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-05 13:12:15,976 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:15,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:15,977 INFO L82 PathProgramCache]: Analyzing trace with hash 552334938, now seen corresponding path program 102 times [2021-06-05 13:12:15,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:15,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4842698] [2021-06-05 13:12:15,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:16,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:16,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4842698] [2021-06-05 13:12:16,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4842698] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:16,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:16,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:16,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207479229] [2021-06-05 13:12:16,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:16,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:16,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:16,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:16,051 INFO L87 Difference]: Start difference. First operand 1624 states and 4866 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:16,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:16,216 INFO L93 Difference]: Finished difference Result 1845 states and 5416 transitions. [2021-06-05 13:12:16,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:16,217 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:16,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:16,219 INFO L225 Difference]: With dead ends: 1845 [2021-06-05 13:12:16,219 INFO L226 Difference]: Without dead ends: 1600 [2021-06-05 13:12:16,219 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:16,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2021-06-05 13:12:16,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1516. [2021-06-05 13:12:16,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 2.9584158415841584) internal successors, (4482), 1515 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:16,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 4482 transitions. [2021-06-05 13:12:16,236 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 4482 transitions. Word has length 26 [2021-06-05 13:12:16,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:16,236 INFO L482 AbstractCegarLoop]: Abstraction has 1516 states and 4482 transitions. [2021-06-05 13:12:16,236 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:16,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 4482 transitions. [2021-06-05 13:12:16,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:16,237 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:16,237 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:16,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-05 13:12:16,237 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:16,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:16,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1983958852, now seen corresponding path program 103 times [2021-06-05 13:12:16,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:16,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688370526] [2021-06-05 13:12:16,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:16,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:16,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:16,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688370526] [2021-06-05 13:12:16,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688370526] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:16,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:16,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:16,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193521760] [2021-06-05 13:12:16,320 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:16,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:16,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:16,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:16,320 INFO L87 Difference]: Start difference. First operand 1516 states and 4482 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:16,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:16,495 INFO L93 Difference]: Finished difference Result 1776 states and 5183 transitions. [2021-06-05 13:12:16,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:16,496 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:16,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:16,498 INFO L225 Difference]: With dead ends: 1776 [2021-06-05 13:12:16,498 INFO L226 Difference]: Without dead ends: 1640 [2021-06-05 13:12:16,498 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:16,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2021-06-05 13:12:16,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1518. [2021-06-05 13:12:16,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1517 states have (on average 2.95385629531971) internal successors, (4481), 1517 states have internal predecessors, (4481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:16,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 4481 transitions. [2021-06-05 13:12:16,515 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 4481 transitions. Word has length 26 [2021-06-05 13:12:16,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:16,515 INFO L482 AbstractCegarLoop]: Abstraction has 1518 states and 4481 transitions. [2021-06-05 13:12:16,515 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:16,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 4481 transitions. [2021-06-05 13:12:16,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:16,516 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:16,516 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:16,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-05 13:12:16,516 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:16,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:16,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1711741822, now seen corresponding path program 104 times [2021-06-05 13:12:16,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:16,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265821317] [2021-06-05 13:12:16,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:16,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:16,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:16,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265821317] [2021-06-05 13:12:16,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265821317] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:16,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:16,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:16,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382574648] [2021-06-05 13:12:16,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:16,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:16,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:16,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:16,589 INFO L87 Difference]: Start difference. First operand 1518 states and 4481 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:16,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:16,765 INFO L93 Difference]: Finished difference Result 1746 states and 5066 transitions. [2021-06-05 13:12:16,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:16,765 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:16,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:16,767 INFO L225 Difference]: With dead ends: 1746 [2021-06-05 13:12:16,767 INFO L226 Difference]: Without dead ends: 1617 [2021-06-05 13:12:16,768 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:16,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2021-06-05 13:12:16,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1514. [2021-06-05 13:12:16,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 2.9543952412425645) internal successors, (4470), 1513 states have internal predecessors, (4470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 4470 transitions. [2021-06-05 13:12:16,785 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 4470 transitions. Word has length 26 [2021-06-05 13:12:16,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:16,785 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 4470 transitions. [2021-06-05 13:12:16,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:16,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 4470 transitions. [2021-06-05 13:12:16,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:16,786 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:16,787 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:16,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-05 13:12:16,787 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:16,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:16,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1138344546, now seen corresponding path program 105 times [2021-06-05 13:12:16,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:16,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256486458] [2021-06-05 13:12:16,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:16,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:16,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256486458] [2021-06-05 13:12:16,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256486458] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:16,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:16,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:16,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182915134] [2021-06-05 13:12:16,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:16,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:16,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:16,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:16,856 INFO L87 Difference]: Start difference. First operand 1514 states and 4470 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:17,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:17,027 INFO L93 Difference]: Finished difference Result 1698 states and 4924 transitions. [2021-06-05 13:12:17,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:17,027 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:17,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:17,029 INFO L225 Difference]: With dead ends: 1698 [2021-06-05 13:12:17,029 INFO L226 Difference]: Without dead ends: 1552 [2021-06-05 13:12:17,030 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:17,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2021-06-05 13:12:17,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1502. [2021-06-05 13:12:17,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 2.9573617588274486) internal successors, (4439), 1501 states have internal predecessors, (4439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:17,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 4439 transitions. [2021-06-05 13:12:17,046 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 4439 transitions. Word has length 26 [2021-06-05 13:12:17,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:17,046 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 4439 transitions. [2021-06-05 13:12:17,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:17,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 4439 transitions. [2021-06-05 13:12:17,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:17,047 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:17,048 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:17,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-05 13:12:17,048 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:17,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:17,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1141733984, now seen corresponding path program 106 times [2021-06-05 13:12:17,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:17,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019732912] [2021-06-05 13:12:17,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:17,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:17,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019732912] [2021-06-05 13:12:17,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019732912] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:17,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:17,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:17,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725138102] [2021-06-05 13:12:17,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:17,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:17,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:17,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:17,124 INFO L87 Difference]: Start difference. First operand 1502 states and 4439 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:17,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:17,293 INFO L93 Difference]: Finished difference Result 1727 states and 5036 transitions. [2021-06-05 13:12:17,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:17,293 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:17,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:17,295 INFO L225 Difference]: With dead ends: 1727 [2021-06-05 13:12:17,295 INFO L226 Difference]: Without dead ends: 1598 [2021-06-05 13:12:17,295 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:17,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-06-05 13:12:17,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1526. [2021-06-05 13:12:17,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 2.954098360655738) internal successors, (4505), 1525 states have internal predecessors, (4505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:17,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 4505 transitions. [2021-06-05 13:12:17,312 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 4505 transitions. Word has length 26 [2021-06-05 13:12:17,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:17,312 INFO L482 AbstractCegarLoop]: Abstraction has 1526 states and 4505 transitions. [2021-06-05 13:12:17,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:17,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 4505 transitions. [2021-06-05 13:12:17,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:17,314 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:17,314 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:17,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-05 13:12:17,314 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:17,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:17,314 INFO L82 PathProgramCache]: Analyzing trace with hash 568336708, now seen corresponding path program 107 times [2021-06-05 13:12:17,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:17,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722581739] [2021-06-05 13:12:17,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:17,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:17,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:17,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722581739] [2021-06-05 13:12:17,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722581739] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:17,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:17,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:17,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394330218] [2021-06-05 13:12:17,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:17,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:17,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:17,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:17,385 INFO L87 Difference]: Start difference. First operand 1526 states and 4505 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:17,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:17,593 INFO L93 Difference]: Finished difference Result 1850 states and 5404 transitions. [2021-06-05 13:12:17,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:17,593 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:17,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:17,596 INFO L225 Difference]: With dead ends: 1850 [2021-06-05 13:12:17,596 INFO L226 Difference]: Without dead ends: 1689 [2021-06-05 13:12:17,596 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:17,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2021-06-05 13:12:17,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1590. [2021-06-05 13:12:17,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1590 states, 1589 states have (on average 2.947136563876652) internal successors, (4683), 1589 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:17,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 4683 transitions. [2021-06-05 13:12:17,622 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 4683 transitions. Word has length 26 [2021-06-05 13:12:17,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:17,622 INFO L482 AbstractCegarLoop]: Abstraction has 1590 states and 4683 transitions. [2021-06-05 13:12:17,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:17,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 4683 transitions. [2021-06-05 13:12:17,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:17,624 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:17,624 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:17,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-05 13:12:17,625 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:17,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:17,625 INFO L82 PathProgramCache]: Analyzing trace with hash 442819714, now seen corresponding path program 108 times [2021-06-05 13:12:17,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:17,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785000336] [2021-06-05 13:12:17,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:17,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:17,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785000336] [2021-06-05 13:12:17,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785000336] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:17,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:17,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:17,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429212104] [2021-06-05 13:12:17,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:17,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:17,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:17,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:17,697 INFO L87 Difference]: Start difference. First operand 1590 states and 4683 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:17,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:17,887 INFO L93 Difference]: Finished difference Result 1788 states and 5178 transitions. [2021-06-05 13:12:17,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:17,888 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:17,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:17,890 INFO L225 Difference]: With dead ends: 1788 [2021-06-05 13:12:17,890 INFO L226 Difference]: Without dead ends: 1636 [2021-06-05 13:12:17,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:17,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-06-05 13:12:17,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1524. [2021-06-05 13:12:17,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1523 states have (on average 2.9507550886408405) internal successors, (4494), 1523 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:17,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 4494 transitions. [2021-06-05 13:12:17,907 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 4494 transitions. Word has length 26 [2021-06-05 13:12:17,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:17,907 INFO L482 AbstractCegarLoop]: Abstraction has 1524 states and 4494 transitions. [2021-06-05 13:12:17,907 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:17,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 4494 transitions. [2021-06-05 13:12:17,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:17,908 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:17,909 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:17,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-05 13:12:17,909 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:17,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:17,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1608572506, now seen corresponding path program 109 times [2021-06-05 13:12:17,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:17,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478530057] [2021-06-05 13:12:17,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:17,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:17,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:17,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478530057] [2021-06-05 13:12:17,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478530057] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:17,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:17,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:17,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452968345] [2021-06-05 13:12:17,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:17,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:17,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:17,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:17,980 INFO L87 Difference]: Start difference. First operand 1524 states and 4494 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:18,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:18,183 INFO L93 Difference]: Finished difference Result 1802 states and 5245 transitions. [2021-06-05 13:12:18,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:18,183 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:18,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:18,186 INFO L225 Difference]: With dead ends: 1802 [2021-06-05 13:12:18,186 INFO L226 Difference]: Without dead ends: 1586 [2021-06-05 13:12:18,186 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:18,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2021-06-05 13:12:18,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1464. [2021-06-05 13:12:18,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 2.9514695830485302) internal successors, (4318), 1463 states have internal predecessors, (4318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:18,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4318 transitions. [2021-06-05 13:12:18,206 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4318 transitions. Word has length 26 [2021-06-05 13:12:18,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:18,207 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 4318 transitions. [2021-06-05 13:12:18,207 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:18,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4318 transitions. [2021-06-05 13:12:18,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:18,208 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:18,208 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:18,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-05 13:12:18,208 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:18,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:18,209 INFO L82 PathProgramCache]: Analyzing trace with hash -2030139044, now seen corresponding path program 110 times [2021-06-05 13:12:18,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:18,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87470432] [2021-06-05 13:12:18,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:18,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:18,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:18,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87470432] [2021-06-05 13:12:18,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87470432] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:18,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:18,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:18,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626676653] [2021-06-05 13:12:18,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:18,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:18,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:18,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:18,268 INFO L87 Difference]: Start difference. First operand 1464 states and 4318 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:18,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:18,403 INFO L93 Difference]: Finished difference Result 1765 states and 5135 transitions. [2021-06-05 13:12:18,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:18,404 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:18,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:18,406 INFO L225 Difference]: With dead ends: 1765 [2021-06-05 13:12:18,406 INFO L226 Difference]: Without dead ends: 1626 [2021-06-05 13:12:18,406 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:18,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2021-06-05 13:12:18,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1511. [2021-06-05 13:12:18,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1510 states have (on average 2.9377483443708607) internal successors, (4436), 1510 states have internal predecessors, (4436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:18,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 4436 transitions. [2021-06-05 13:12:18,430 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 4436 transitions. Word has length 26 [2021-06-05 13:12:18,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:18,430 INFO L482 AbstractCegarLoop]: Abstraction has 1511 states and 4436 transitions. [2021-06-05 13:12:18,430 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:18,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 4436 transitions. [2021-06-05 13:12:18,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:18,432 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:18,433 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:18,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-06-05 13:12:18,433 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:18,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:18,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1405243258, now seen corresponding path program 111 times [2021-06-05 13:12:18,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:18,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336707179] [2021-06-05 13:12:18,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:18,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:18,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336707179] [2021-06-05 13:12:18,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336707179] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:18,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:18,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:18,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550451612] [2021-06-05 13:12:18,500 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:18,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:18,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:18,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:18,500 INFO L87 Difference]: Start difference. First operand 1511 states and 4436 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:18,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:18,669 INFO L93 Difference]: Finished difference Result 1727 states and 5019 transitions. [2021-06-05 13:12:18,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:18,670 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:18,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:18,672 INFO L225 Difference]: With dead ends: 1727 [2021-06-05 13:12:18,672 INFO L226 Difference]: Without dead ends: 1595 [2021-06-05 13:12:18,672 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:18,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2021-06-05 13:12:18,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1473. [2021-06-05 13:12:18,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1473 states, 1472 states have (on average 2.942934782608696) internal successors, (4332), 1472 states have internal predecessors, (4332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:18,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 4332 transitions. [2021-06-05 13:12:18,688 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 4332 transitions. Word has length 26 [2021-06-05 13:12:18,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:18,688 INFO L482 AbstractCegarLoop]: Abstraction has 1473 states and 4332 transitions. [2021-06-05 13:12:18,688 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:18,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 4332 transitions. [2021-06-05 13:12:18,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:18,690 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:18,690 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:18,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-06-05 13:12:18,690 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:18,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:18,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1895222174, now seen corresponding path program 112 times [2021-06-05 13:12:18,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:18,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753324062] [2021-06-05 13:12:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:18,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:18,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753324062] [2021-06-05 13:12:18,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753324062] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:18,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:18,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:18,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730781686] [2021-06-05 13:12:18,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:18,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:18,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:18,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:18,746 INFO L87 Difference]: Start difference. First operand 1473 states and 4332 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:18,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:18,886 INFO L93 Difference]: Finished difference Result 1775 states and 5127 transitions. [2021-06-05 13:12:18,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:18,886 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:18,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:18,889 INFO L225 Difference]: With dead ends: 1775 [2021-06-05 13:12:18,889 INFO L226 Difference]: Without dead ends: 1647 [2021-06-05 13:12:18,889 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:18,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-06-05 13:12:18,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1525. [2021-06-05 13:12:18,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 2.927165354330709) internal successors, (4461), 1524 states have internal predecessors, (4461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:18,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 4461 transitions. [2021-06-05 13:12:18,905 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 4461 transitions. Word has length 26 [2021-06-05 13:12:18,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:18,905 INFO L482 AbstractCegarLoop]: Abstraction has 1525 states and 4461 transitions. [2021-06-05 13:12:18,905 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:18,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 4461 transitions. [2021-06-05 13:12:18,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:18,907 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:18,907 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:18,907 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-06-05 13:12:18,907 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:18,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:18,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1475702152, now seen corresponding path program 113 times [2021-06-05 13:12:18,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:18,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135884590] [2021-06-05 13:12:18,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:18,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:18,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135884590] [2021-06-05 13:12:18,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135884590] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:18,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:18,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:18,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205581676] [2021-06-05 13:12:18,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:18,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:18,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:18,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:18,990 INFO L87 Difference]: Start difference. First operand 1525 states and 4461 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:19,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:19,219 INFO L93 Difference]: Finished difference Result 1738 states and 5008 transitions. [2021-06-05 13:12:19,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:19,219 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:19,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:19,222 INFO L225 Difference]: With dead ends: 1738 [2021-06-05 13:12:19,222 INFO L226 Difference]: Without dead ends: 1633 [2021-06-05 13:12:19,222 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:19,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2021-06-05 13:12:19,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1501. [2021-06-05 13:12:19,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 1500 states have (on average 2.9326666666666665) internal successors, (4399), 1500 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:19,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 4399 transitions. [2021-06-05 13:12:19,245 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 4399 transitions. Word has length 26 [2021-06-05 13:12:19,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:19,245 INFO L482 AbstractCegarLoop]: Abstraction has 1501 states and 4399 transitions. [2021-06-05 13:12:19,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:19,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 4399 transitions. [2021-06-05 13:12:19,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:19,247 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:19,247 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:19,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-06-05 13:12:19,247 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:19,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:19,247 INFO L82 PathProgramCache]: Analyzing trace with hash 282971354, now seen corresponding path program 114 times [2021-06-05 13:12:19,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:19,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722314111] [2021-06-05 13:12:19,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:19,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:19,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722314111] [2021-06-05 13:12:19,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722314111] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:19,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:19,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:19,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126709695] [2021-06-05 13:12:19,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:19,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:19,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:19,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:19,322 INFO L87 Difference]: Start difference. First operand 1501 states and 4399 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:19,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:19,503 INFO L93 Difference]: Finished difference Result 1652 states and 4785 transitions. [2021-06-05 13:12:19,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:19,503 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:19,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:19,505 INFO L225 Difference]: With dead ends: 1652 [2021-06-05 13:12:19,505 INFO L226 Difference]: Without dead ends: 1573 [2021-06-05 13:12:19,505 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:19,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-06-05 13:12:19,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1507. [2021-06-05 13:12:19,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1506 states have (on average 2.9276228419654715) internal successors, (4409), 1506 states have internal predecessors, (4409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:19,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 4409 transitions. [2021-06-05 13:12:19,522 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 4409 transitions. Word has length 26 [2021-06-05 13:12:19,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:19,522 INFO L482 AbstractCegarLoop]: Abstraction has 1507 states and 4409 transitions. [2021-06-05 13:12:19,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:19,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 4409 transitions. [2021-06-05 13:12:19,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:19,524 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:19,524 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:19,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-06-05 13:12:19,524 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:19,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1152415962, now seen corresponding path program 115 times [2021-06-05 13:12:19,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:19,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506030190] [2021-06-05 13:12:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:19,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:19,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506030190] [2021-06-05 13:12:19,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506030190] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:19,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:19,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:19,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988486142] [2021-06-05 13:12:19,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:19,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:19,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:19,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:19,597 INFO L87 Difference]: Start difference. First operand 1507 states and 4409 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:19,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:19,766 INFO L93 Difference]: Finished difference Result 1745 states and 5047 transitions. [2021-06-05 13:12:19,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:19,766 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:19,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:19,768 INFO L225 Difference]: With dead ends: 1745 [2021-06-05 13:12:19,768 INFO L226 Difference]: Without dead ends: 1641 [2021-06-05 13:12:19,768 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:19,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2021-06-05 13:12:19,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1499. [2021-06-05 13:12:19,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1498 states have (on average 2.9332443257676903) internal successors, (4394), 1498 states have internal predecessors, (4394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:19,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 4394 transitions. [2021-06-05 13:12:19,801 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 4394 transitions. Word has length 26 [2021-06-05 13:12:19,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:19,801 INFO L482 AbstractCegarLoop]: Abstraction has 1499 states and 4394 transitions. [2021-06-05 13:12:19,801 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:19,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 4394 transitions. [2021-06-05 13:12:19,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:19,803 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:19,803 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:19,803 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-06-05 13:12:19,803 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:19,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:19,803 INFO L82 PathProgramCache]: Analyzing trace with hash -316295268, now seen corresponding path program 116 times [2021-06-05 13:12:19,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:19,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968755657] [2021-06-05 13:12:19,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:19,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:19,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:19,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968755657] [2021-06-05 13:12:19,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968755657] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:19,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:19,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:19,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296968153] [2021-06-05 13:12:19,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:19,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:19,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:19,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:19,868 INFO L87 Difference]: Start difference. First operand 1499 states and 4394 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:20,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:20,044 INFO L93 Difference]: Finished difference Result 1652 states and 4784 transitions. [2021-06-05 13:12:20,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:20,044 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:20,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:20,046 INFO L225 Difference]: With dead ends: 1652 [2021-06-05 13:12:20,046 INFO L226 Difference]: Without dead ends: 1573 [2021-06-05 13:12:20,046 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:20,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-06-05 13:12:20,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1493. [2021-06-05 13:12:20,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1492 states have (on average 2.9383378016085793) internal successors, (4384), 1492 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:20,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 4384 transitions. [2021-06-05 13:12:20,063 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 4384 transitions. Word has length 26 [2021-06-05 13:12:20,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:20,063 INFO L482 AbstractCegarLoop]: Abstraction has 1493 states and 4384 transitions. [2021-06-05 13:12:20,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:20,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 4384 transitions. [2021-06-05 13:12:20,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:20,065 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:20,065 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:20,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-06-05 13:12:20,065 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:20,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:20,065 INFO L82 PathProgramCache]: Analyzing trace with hash -889692544, now seen corresponding path program 117 times [2021-06-05 13:12:20,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:20,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867294733] [2021-06-05 13:12:20,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:20,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:20,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867294733] [2021-06-05 13:12:20,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867294733] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:20,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:20,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:20,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790662573] [2021-06-05 13:12:20,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:20,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:20,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:20,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:20,129 INFO L87 Difference]: Start difference. First operand 1493 states and 4384 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:20,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:20,308 INFO L93 Difference]: Finished difference Result 1700 states and 4918 transitions. [2021-06-05 13:12:20,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:20,308 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:20,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:20,310 INFO L225 Difference]: With dead ends: 1700 [2021-06-05 13:12:20,310 INFO L226 Difference]: Without dead ends: 1604 [2021-06-05 13:12:20,311 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:20,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2021-06-05 13:12:20,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1481. [2021-06-05 13:12:20,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1480 states have (on average 2.9466216216216217) internal successors, (4361), 1480 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:20,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4361 transitions. [2021-06-05 13:12:20,327 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4361 transitions. Word has length 26 [2021-06-05 13:12:20,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:20,327 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 4361 transitions. [2021-06-05 13:12:20,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:20,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4361 transitions. [2021-06-05 13:12:20,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:20,329 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:20,329 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:20,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-06-05 13:12:20,329 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:20,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:20,329 INFO L82 PathProgramCache]: Analyzing trace with hash -664852864, now seen corresponding path program 118 times [2021-06-05 13:12:20,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:20,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005269201] [2021-06-05 13:12:20,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:20,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:20,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005269201] [2021-06-05 13:12:20,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005269201] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:20,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:20,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:20,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949655173] [2021-06-05 13:12:20,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:20,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:20,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:20,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:20,381 INFO L87 Difference]: Start difference. First operand 1481 states and 4361 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:20,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:20,519 INFO L93 Difference]: Finished difference Result 1724 states and 4976 transitions. [2021-06-05 13:12:20,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:20,519 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:20,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:20,521 INFO L225 Difference]: With dead ends: 1724 [2021-06-05 13:12:20,521 INFO L226 Difference]: Without dead ends: 1560 [2021-06-05 13:12:20,521 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:20,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2021-06-05 13:12:20,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1470. [2021-06-05 13:12:20,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 2.933287950987066) internal successors, (4309), 1469 states have internal predecessors, (4309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:20,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4309 transitions. [2021-06-05 13:12:20,538 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4309 transitions. Word has length 26 [2021-06-05 13:12:20,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:20,538 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4309 transitions. [2021-06-05 13:12:20,538 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:20,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4309 transitions. [2021-06-05 13:12:20,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:20,539 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:20,539 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:20,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-06-05 13:12:20,539 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:20,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:20,540 INFO L82 PathProgramCache]: Analyzing trace with hash 259190106, now seen corresponding path program 119 times [2021-06-05 13:12:20,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:20,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609976171] [2021-06-05 13:12:20,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:20,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:20,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609976171] [2021-06-05 13:12:20,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609976171] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:20,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:20,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:20,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897512563] [2021-06-05 13:12:20,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:20,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:20,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:20,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:20,610 INFO L87 Difference]: Start difference. First operand 1470 states and 4309 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:20,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:20,783 INFO L93 Difference]: Finished difference Result 1671 states and 4816 transitions. [2021-06-05 13:12:20,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:20,783 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:20,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:20,785 INFO L225 Difference]: With dead ends: 1671 [2021-06-05 13:12:20,785 INFO L226 Difference]: Without dead ends: 1566 [2021-06-05 13:12:20,785 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:20,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-06-05 13:12:20,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1446. [2021-06-05 13:12:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1445 states have (on average 2.9363321799307958) internal successors, (4243), 1445 states have internal predecessors, (4243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 4243 transitions. [2021-06-05 13:12:20,807 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 4243 transitions. Word has length 26 [2021-06-05 13:12:20,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:20,807 INFO L482 AbstractCegarLoop]: Abstraction has 1446 states and 4243 transitions. [2021-06-05 13:12:20,807 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:20,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 4243 transitions. [2021-06-05 13:12:20,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:20,809 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:20,809 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:20,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-06-05 13:12:20,809 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:20,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:20,809 INFO L82 PathProgramCache]: Analyzing trace with hash 376447608, now seen corresponding path program 120 times [2021-06-05 13:12:20,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:20,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662295060] [2021-06-05 13:12:20,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:20,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:20,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:20,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662295060] [2021-06-05 13:12:20,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662295060] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:20,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:20,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:20,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990254995] [2021-06-05 13:12:20,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:20,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:20,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:20,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:20,881 INFO L87 Difference]: Start difference. First operand 1446 states and 4243 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:21,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:21,056 INFO L93 Difference]: Finished difference Result 1597 states and 4640 transitions. [2021-06-05 13:12:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:21,056 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:21,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:21,058 INFO L225 Difference]: With dead ends: 1597 [2021-06-05 13:12:21,058 INFO L226 Difference]: Without dead ends: 1518 [2021-06-05 13:12:21,058 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:21,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-06-05 13:12:21,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1448. [2021-06-05 13:12:21,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 2.9371112646855564) internal successors, (4250), 1447 states have internal predecessors, (4250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:21,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 4250 transitions. [2021-06-05 13:12:21,074 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 4250 transitions. Word has length 26 [2021-06-05 13:12:21,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:21,074 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 4250 transitions. [2021-06-05 13:12:21,074 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:21,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 4250 transitions. [2021-06-05 13:12:21,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:21,075 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:21,075 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:21,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-06-05 13:12:21,075 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:21,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:21,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1599135360, now seen corresponding path program 121 times [2021-06-05 13:12:21,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:21,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659948447] [2021-06-05 13:12:21,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:21,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:21,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:21,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659948447] [2021-06-05 13:12:21,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659948447] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:21,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:21,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:21,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073336662] [2021-06-05 13:12:21,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:21,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:21,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:21,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:21,177 INFO L87 Difference]: Start difference. First operand 1448 states and 4250 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:21,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:21,354 INFO L93 Difference]: Finished difference Result 1668 states and 4799 transitions. [2021-06-05 13:12:21,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:21,354 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:21,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:21,356 INFO L225 Difference]: With dead ends: 1668 [2021-06-05 13:12:21,357 INFO L226 Difference]: Without dead ends: 1579 [2021-06-05 13:12:21,357 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:21,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-06-05 13:12:21,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1445. [2021-06-05 13:12:21,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 2.9335180055401664) internal successors, (4236), 1444 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:21,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 4236 transitions. [2021-06-05 13:12:21,389 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 4236 transitions. Word has length 26 [2021-06-05 13:12:21,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:21,390 INFO L482 AbstractCegarLoop]: Abstraction has 1445 states and 4236 transitions. [2021-06-05 13:12:21,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:21,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 4236 transitions. [2021-06-05 13:12:21,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:21,391 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:21,391 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:21,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-06-05 13:12:21,391 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:21,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:21,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1192480934, now seen corresponding path program 122 times [2021-06-05 13:12:21,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:21,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902005944] [2021-06-05 13:12:21,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:21,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:21,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902005944] [2021-06-05 13:12:21,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902005944] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:21,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:21,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:21,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766646978] [2021-06-05 13:12:21,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:21,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:21,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:21,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:21,458 INFO L87 Difference]: Start difference. First operand 1445 states and 4236 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:21,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:21,630 INFO L93 Difference]: Finished difference Result 1656 states and 4808 transitions. [2021-06-05 13:12:21,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:21,630 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:21,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:21,632 INFO L225 Difference]: With dead ends: 1656 [2021-06-05 13:12:21,633 INFO L226 Difference]: Without dead ends: 1553 [2021-06-05 13:12:21,633 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:21,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2021-06-05 13:12:21,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1387. [2021-06-05 13:12:21,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1386 states have (on average 2.9552669552669553) internal successors, (4096), 1386 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:21,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 4096 transitions. [2021-06-05 13:12:21,649 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 4096 transitions. Word has length 26 [2021-06-05 13:12:21,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:21,649 INFO L482 AbstractCegarLoop]: Abstraction has 1387 states and 4096 transitions. [2021-06-05 13:12:21,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:21,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 4096 transitions. [2021-06-05 13:12:21,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:21,650 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:21,650 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:21,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-06-05 13:12:21,651 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:21,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:21,651 INFO L82 PathProgramCache]: Analyzing trace with hash -938795814, now seen corresponding path program 123 times [2021-06-05 13:12:21,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:21,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260165857] [2021-06-05 13:12:21,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:21,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:21,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260165857] [2021-06-05 13:12:21,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260165857] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:21,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:21,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:21,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810595239] [2021-06-05 13:12:21,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:21,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:21,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:21,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:21,722 INFO L87 Difference]: Start difference. First operand 1387 states and 4096 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:21,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:21,895 INFO L93 Difference]: Finished difference Result 1532 states and 4467 transitions. [2021-06-05 13:12:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:21,896 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:21,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:21,898 INFO L225 Difference]: With dead ends: 1532 [2021-06-05 13:12:21,898 INFO L226 Difference]: Without dead ends: 1453 [2021-06-05 13:12:21,898 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:21,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-05 13:12:21,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1388. [2021-06-05 13:12:21,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 2.9560201874549388) internal successors, (4100), 1387 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:21,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4100 transitions. [2021-06-05 13:12:21,913 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4100 transitions. Word has length 26 [2021-06-05 13:12:21,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:21,913 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 4100 transitions. [2021-06-05 13:12:21,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:21,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4100 transitions. [2021-06-05 13:12:21,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:21,915 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:21,915 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:21,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-06-05 13:12:21,915 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:21,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:21,915 INFO L82 PathProgramCache]: Analyzing trace with hash -69351206, now seen corresponding path program 124 times [2021-06-05 13:12:21,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:21,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948399638] [2021-06-05 13:12:21,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:21,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:21,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:21,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948399638] [2021-06-05 13:12:21,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948399638] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:21,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:21,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:21,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880194667] [2021-06-05 13:12:21,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:21,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:21,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:21,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:21,985 INFO L87 Difference]: Start difference. First operand 1388 states and 4100 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:22,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:22,158 INFO L93 Difference]: Finished difference Result 1568 states and 4567 transitions. [2021-06-05 13:12:22,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:22,159 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:22,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:22,161 INFO L225 Difference]: With dead ends: 1568 [2021-06-05 13:12:22,161 INFO L226 Difference]: Without dead ends: 1464 [2021-06-05 13:12:22,161 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:22,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-06-05 13:12:22,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1391. [2021-06-05 13:12:22,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 2.956115107913669) internal successors, (4109), 1390 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:22,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4109 transitions. [2021-06-05 13:12:22,176 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4109 transitions. Word has length 26 [2021-06-05 13:12:22,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:22,176 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 4109 transitions. [2021-06-05 13:12:22,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:22,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4109 transitions. [2021-06-05 13:12:22,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:22,178 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:22,178 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:22,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-06-05 13:12:22,178 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:22,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:22,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1538062436, now seen corresponding path program 125 times [2021-06-05 13:12:22,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:22,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299500760] [2021-06-05 13:12:22,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:22,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:22,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299500760] [2021-06-05 13:12:22,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299500760] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:22,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:22,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:22,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326479705] [2021-06-05 13:12:22,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:22,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:22,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:22,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:22,253 INFO L87 Difference]: Start difference. First operand 1391 states and 4109 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:22,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:22,429 INFO L93 Difference]: Finished difference Result 1536 states and 4479 transitions. [2021-06-05 13:12:22,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:22,429 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:22,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:22,431 INFO L225 Difference]: With dead ends: 1536 [2021-06-05 13:12:22,431 INFO L226 Difference]: Without dead ends: 1457 [2021-06-05 13:12:22,431 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:22,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-06-05 13:12:22,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1392. [2021-06-05 13:12:22,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 2.9568655643421997) internal successors, (4113), 1391 states have internal predecessors, (4113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:22,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 4113 transitions. [2021-06-05 13:12:22,446 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 4113 transitions. Word has length 26 [2021-06-05 13:12:22,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:22,447 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 4113 transitions. [2021-06-05 13:12:22,447 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:22,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 4113 transitions. [2021-06-05 13:12:22,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:22,448 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:22,448 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:22,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-06-05 13:12:22,448 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:22,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:22,449 INFO L82 PathProgramCache]: Analyzing trace with hash -2111459712, now seen corresponding path program 126 times [2021-06-05 13:12:22,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:22,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081997266] [2021-06-05 13:12:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:22,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:22,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081997266] [2021-06-05 13:12:22,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081997266] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:22,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:22,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:22,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627932845] [2021-06-05 13:12:22,528 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:22,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:22,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:22,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:22,529 INFO L87 Difference]: Start difference. First operand 1392 states and 4113 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:22,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:22,707 INFO L93 Difference]: Finished difference Result 1543 states and 4492 transitions. [2021-06-05 13:12:22,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:22,708 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:22,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:22,710 INFO L225 Difference]: With dead ends: 1543 [2021-06-05 13:12:22,710 INFO L226 Difference]: Without dead ends: 1460 [2021-06-05 13:12:22,710 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:22,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-06-05 13:12:22,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1393. [2021-06-05 13:12:22,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 1392 states have (on average 2.9561781609195403) internal successors, (4115), 1392 states have internal predecessors, (4115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:22,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 4115 transitions. [2021-06-05 13:12:22,726 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 4115 transitions. Word has length 26 [2021-06-05 13:12:22,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:22,726 INFO L482 AbstractCegarLoop]: Abstraction has 1393 states and 4115 transitions. [2021-06-05 13:12:22,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:22,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 4115 transitions. [2021-06-05 13:12:22,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:22,728 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:22,728 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:22,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-06-05 13:12:22,728 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:22,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:22,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1524908864, now seen corresponding path program 127 times [2021-06-05 13:12:22,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:22,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336222280] [2021-06-05 13:12:22,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:22,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:22,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:22,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336222280] [2021-06-05 13:12:22,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336222280] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:22,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:22,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:22,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853899168] [2021-06-05 13:12:22,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:22,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:22,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:22,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:22,796 INFO L87 Difference]: Start difference. First operand 1393 states and 4115 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:22,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:22,971 INFO L93 Difference]: Finished difference Result 1572 states and 4601 transitions. [2021-06-05 13:12:22,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:22,971 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:22,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:22,973 INFO L225 Difference]: With dead ends: 1572 [2021-06-05 13:12:22,973 INFO L226 Difference]: Without dead ends: 1475 [2021-06-05 13:12:22,973 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:22,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2021-06-05 13:12:22,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1390. [2021-06-05 13:12:22,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 2.9546436285097193) internal successors, (4104), 1389 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:23,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 4104 transitions. [2021-06-05 13:12:23,001 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 4104 transitions. Word has length 26 [2021-06-05 13:12:23,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:23,002 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 4104 transitions. [2021-06-05 13:12:23,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:23,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 4104 transitions. [2021-06-05 13:12:23,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:23,003 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:23,003 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:23,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-06-05 13:12:23,004 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:23,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:23,004 INFO L82 PathProgramCache]: Analyzing trace with hash 2057990590, now seen corresponding path program 128 times [2021-06-05 13:12:23,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:23,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774580016] [2021-06-05 13:12:23,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:23,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:23,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774580016] [2021-06-05 13:12:23,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774580016] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:23,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:23,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:23,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479216096] [2021-06-05 13:12:23,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:23,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:23,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:23,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:23,076 INFO L87 Difference]: Start difference. First operand 1390 states and 4104 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:23,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:23,254 INFO L93 Difference]: Finished difference Result 1586 states and 4616 transitions. [2021-06-05 13:12:23,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:23,254 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:23,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:23,256 INFO L225 Difference]: With dead ends: 1586 [2021-06-05 13:12:23,256 INFO L226 Difference]: Without dead ends: 1498 [2021-06-05 13:12:23,256 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:23,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-06-05 13:12:23,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1391. [2021-06-05 13:12:23,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 2.9532374100719423) internal successors, (4105), 1390 states have internal predecessors, (4105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:23,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4105 transitions. [2021-06-05 13:12:23,273 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4105 transitions. Word has length 26 [2021-06-05 13:12:23,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:23,273 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 4105 transitions. [2021-06-05 13:12:23,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:23,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4105 transitions. [2021-06-05 13:12:23,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:23,275 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:23,275 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:23,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-06-05 13:12:23,275 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:23,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:23,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1145603780, now seen corresponding path program 129 times [2021-06-05 13:12:23,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:23,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878426604] [2021-06-05 13:12:23,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:23,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:23,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:23,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878426604] [2021-06-05 13:12:23,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878426604] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:23,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:23,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:23,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904902928] [2021-06-05 13:12:23,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:23,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:23,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:23,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:23,363 INFO L87 Difference]: Start difference. First operand 1391 states and 4105 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:23,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:23,542 INFO L93 Difference]: Finished difference Result 1597 states and 4669 transitions. [2021-06-05 13:12:23,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:23,542 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:23,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:23,544 INFO L225 Difference]: With dead ends: 1597 [2021-06-05 13:12:23,544 INFO L226 Difference]: Without dead ends: 1518 [2021-06-05 13:12:23,544 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:23,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-06-05 13:12:23,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1397. [2021-06-05 13:12:23,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 2.9548710601719197) internal successors, (4125), 1396 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:23,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 4125 transitions. [2021-06-05 13:12:23,561 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 4125 transitions. Word has length 26 [2021-06-05 13:12:23,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:23,561 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 4125 transitions. [2021-06-05 13:12:23,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:23,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 4125 transitions. [2021-06-05 13:12:23,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:23,562 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:23,562 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:23,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-06-05 13:12:23,562 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:23,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:23,562 INFO L82 PathProgramCache]: Analyzing trace with hash -276159172, now seen corresponding path program 130 times [2021-06-05 13:12:23,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:23,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132013596] [2021-06-05 13:12:23,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:23,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:23,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132013596] [2021-06-05 13:12:23,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132013596] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:23,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:23,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:23,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299501734] [2021-06-05 13:12:23,634 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:23,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:23,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:23,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:23,634 INFO L87 Difference]: Start difference. First operand 1397 states and 4125 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:23,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:23,819 INFO L93 Difference]: Finished difference Result 1624 states and 4728 transitions. [2021-06-05 13:12:23,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:23,820 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:23,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:23,822 INFO L225 Difference]: With dead ends: 1624 [2021-06-05 13:12:23,822 INFO L226 Difference]: Without dead ends: 1520 [2021-06-05 13:12:23,822 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:23,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-06-05 13:12:23,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1388. [2021-06-05 13:12:23,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 2.9495313626532083) internal successors, (4091), 1387 states have internal predecessors, (4091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:23,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4091 transitions. [2021-06-05 13:12:23,838 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4091 transitions. Word has length 26 [2021-06-05 13:12:23,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:23,838 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 4091 transitions. [2021-06-05 13:12:23,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:23,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4091 transitions. [2021-06-05 13:12:23,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:23,840 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:23,840 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:23,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-06-05 13:12:23,840 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:23,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:23,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1644524698, now seen corresponding path program 131 times [2021-06-05 13:12:23,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:23,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775684016] [2021-06-05 13:12:23,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:23,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:23,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:23,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775684016] [2021-06-05 13:12:23,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775684016] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:23,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:23,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:23,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162077863] [2021-06-05 13:12:23,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:23,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:23,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:23,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:23,924 INFO L87 Difference]: Start difference. First operand 1388 states and 4091 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:24,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:24,095 INFO L93 Difference]: Finished difference Result 1580 states and 4623 transitions. [2021-06-05 13:12:24,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:24,095 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:24,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:24,097 INFO L225 Difference]: With dead ends: 1580 [2021-06-05 13:12:24,097 INFO L226 Difference]: Without dead ends: 1492 [2021-06-05 13:12:24,097 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:24,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-06-05 13:12:24,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1389. [2021-06-05 13:12:24,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 1388 states have (on average 2.951008645533141) internal successors, (4096), 1388 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:24,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 4096 transitions. [2021-06-05 13:12:24,113 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 4096 transitions. Word has length 26 [2021-06-05 13:12:24,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:24,113 INFO L482 AbstractCegarLoop]: Abstraction has 1389 states and 4096 transitions. [2021-06-05 13:12:24,113 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:24,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 4096 transitions. [2021-06-05 13:12:24,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:24,114 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:24,115 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:24,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-06-05 13:12:24,115 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:24,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:24,115 INFO L82 PathProgramCache]: Analyzing trace with hash -25644290, now seen corresponding path program 132 times [2021-06-05 13:12:24,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:24,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111805686] [2021-06-05 13:12:24,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:24,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:24,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111805686] [2021-06-05 13:12:24,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111805686] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:24,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:24,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:24,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120087204] [2021-06-05 13:12:24,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:24,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:24,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:24,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:24,179 INFO L87 Difference]: Start difference. First operand 1389 states and 4096 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:24,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:24,363 INFO L93 Difference]: Finished difference Result 1516 states and 4425 transitions. [2021-06-05 13:12:24,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:24,363 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:24,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:24,365 INFO L225 Difference]: With dead ends: 1516 [2021-06-05 13:12:24,365 INFO L226 Difference]: Without dead ends: 1437 [2021-06-05 13:12:24,365 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:24,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2021-06-05 13:12:24,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1388. [2021-06-05 13:12:24,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 2.950252343186734) internal successors, (4092), 1387 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:24,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4092 transitions. [2021-06-05 13:12:24,381 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4092 transitions. Word has length 26 [2021-06-05 13:12:24,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:24,381 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 4092 transitions. [2021-06-05 13:12:24,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:24,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4092 transitions. [2021-06-05 13:12:24,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:24,383 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:24,383 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:24,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-06-05 13:12:24,383 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:24,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:24,383 INFO L82 PathProgramCache]: Analyzing trace with hash -599041566, now seen corresponding path program 133 times [2021-06-05 13:12:24,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:24,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728817473] [2021-06-05 13:12:24,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:24,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:24,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:24,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728817473] [2021-06-05 13:12:24,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728817473] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:24,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:24,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:24,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642663665] [2021-06-05 13:12:24,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:24,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:24,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:24,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:24,447 INFO L87 Difference]: Start difference. First operand 1388 states and 4092 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:24,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:24,624 INFO L93 Difference]: Finished difference Result 1536 states and 4461 transitions. [2021-06-05 13:12:24,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:24,624 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:24,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:24,626 INFO L225 Difference]: With dead ends: 1536 [2021-06-05 13:12:24,626 INFO L226 Difference]: Without dead ends: 1453 [2021-06-05 13:12:24,626 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:24,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-05 13:12:24,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1386. [2021-06-05 13:12:24,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 2.949458483754513) internal successors, (4085), 1385 states have internal predecessors, (4085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:24,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 4085 transitions. [2021-06-05 13:12:24,642 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 4085 transitions. Word has length 26 [2021-06-05 13:12:24,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:24,642 INFO L482 AbstractCegarLoop]: Abstraction has 1386 states and 4085 transitions. [2021-06-05 13:12:24,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:24,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 4085 transitions. [2021-06-05 13:12:24,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:24,643 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:24,643 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:24,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-06-05 13:12:24,643 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:24,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:24,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1417788836, now seen corresponding path program 134 times [2021-06-05 13:12:24,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:24,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606267965] [2021-06-05 13:12:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:24,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:24,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606267965] [2021-06-05 13:12:24,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606267965] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:24,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:24,713 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:24,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941783254] [2021-06-05 13:12:24,713 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:24,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:24,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:24,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:24,713 INFO L87 Difference]: Start difference. First operand 1386 states and 4085 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:24,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:24,884 INFO L93 Difference]: Finished difference Result 1582 states and 4605 transitions. [2021-06-05 13:12:24,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:24,885 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:24,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:24,887 INFO L225 Difference]: With dead ends: 1582 [2021-06-05 13:12:24,887 INFO L226 Difference]: Without dead ends: 1497 [2021-06-05 13:12:24,887 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:24,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-06-05 13:12:24,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1383. [2021-06-05 13:12:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 2.946454413892909) internal successors, (4072), 1382 states have internal predecessors, (4072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:24,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 4072 transitions. [2021-06-05 13:12:24,903 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 4072 transitions. Word has length 26 [2021-06-05 13:12:24,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:24,903 INFO L482 AbstractCegarLoop]: Abstraction has 1383 states and 4072 transitions. [2021-06-05 13:12:24,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:24,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 4072 transitions. [2021-06-05 13:12:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:24,904 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:24,904 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:24,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-06-05 13:12:24,904 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:24,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:24,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1848108702, now seen corresponding path program 135 times [2021-06-05 13:12:24,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:24,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681727021] [2021-06-05 13:12:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:24,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:24,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681727021] [2021-06-05 13:12:24,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681727021] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:24,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:24,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:24,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111344862] [2021-06-05 13:12:24,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:24,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:24,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:24,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:24,972 INFO L87 Difference]: Start difference. First operand 1383 states and 4072 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:25,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:25,147 INFO L93 Difference]: Finished difference Result 1557 states and 4506 transitions. [2021-06-05 13:12:25,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:25,147 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:25,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:25,149 INFO L225 Difference]: With dead ends: 1557 [2021-06-05 13:12:25,149 INFO L226 Difference]: Without dead ends: 1464 [2021-06-05 13:12:25,149 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:25,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-06-05 13:12:25,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1372. [2021-06-05 13:12:25,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1371 states have (on average 2.9540481400437635) internal successors, (4050), 1371 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:25,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 4050 transitions. [2021-06-05 13:12:25,165 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 4050 transitions. Word has length 26 [2021-06-05 13:12:25,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:25,165 INFO L482 AbstractCegarLoop]: Abstraction has 1372 states and 4050 transitions. [2021-06-05 13:12:25,166 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:25,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 4050 transitions. [2021-06-05 13:12:25,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:25,167 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:25,167 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:25,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-06-05 13:12:25,167 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:25,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:25,167 INFO L82 PathProgramCache]: Analyzing trace with hash -782554082, now seen corresponding path program 136 times [2021-06-05 13:12:25,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:25,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293737643] [2021-06-05 13:12:25,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:25,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:25,212 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:25,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293737643] [2021-06-05 13:12:25,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293737643] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:25,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:25,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 13:12:25,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582012380] [2021-06-05 13:12:25,213 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 13:12:25,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:25,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 13:12:25,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:12:25,213 INFO L87 Difference]: Start difference. First operand 1372 states and 4050 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:25,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:25,319 INFO L93 Difference]: Finished difference Result 1654 states and 4846 transitions. [2021-06-05 13:12:25,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 13:12:25,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:25,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:25,321 INFO L225 Difference]: With dead ends: 1654 [2021-06-05 13:12:25,321 INFO L226 Difference]: Without dead ends: 1575 [2021-06-05 13:12:25,321 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.9ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:12:25,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2021-06-05 13:12:25,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1438. [2021-06-05 13:12:25,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1437 states have (on average 2.955462769659012) internal successors, (4247), 1437 states have internal predecessors, (4247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:25,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4247 transitions. [2021-06-05 13:12:25,338 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4247 transitions. Word has length 26 [2021-06-05 13:12:25,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:25,338 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4247 transitions. [2021-06-05 13:12:25,338 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:25,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4247 transitions. [2021-06-05 13:12:25,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:25,339 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:25,339 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:25,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-06-05 13:12:25,340 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:25,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:25,340 INFO L82 PathProgramCache]: Analyzing trace with hash 440133670, now seen corresponding path program 137 times [2021-06-05 13:12:25,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:25,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012530920] [2021-06-05 13:12:25,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:25,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:25,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:25,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012530920] [2021-06-05 13:12:25,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012530920] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:25,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:25,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:25,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345451226] [2021-06-05 13:12:25,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:25,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:25,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:25,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:25,414 INFO L87 Difference]: Start difference. First operand 1438 states and 4247 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:25,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:25,560 INFO L93 Difference]: Finished difference Result 1749 states and 5118 transitions. [2021-06-05 13:12:25,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:25,560 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:25,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:25,563 INFO L225 Difference]: With dead ends: 1749 [2021-06-05 13:12:25,563 INFO L226 Difference]: Without dead ends: 1598 [2021-06-05 13:12:25,563 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:25,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-06-05 13:12:25,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1426. [2021-06-05 13:12:25,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 2.953684210526316) internal successors, (4209), 1425 states have internal predecessors, (4209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:25,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4209 transitions. [2021-06-05 13:12:25,586 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4209 transitions. Word has length 26 [2021-06-05 13:12:25,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:25,586 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 4209 transitions. [2021-06-05 13:12:25,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:25,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4209 transitions. [2021-06-05 13:12:25,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:25,588 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:25,588 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:25,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-06-05 13:12:25,588 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:25,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:25,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1794672444, now seen corresponding path program 138 times [2021-06-05 13:12:25,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:25,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305542441] [2021-06-05 13:12:25,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:25,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:25,648 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:25,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305542441] [2021-06-05 13:12:25,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305542441] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:25,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:25,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:25,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117237026] [2021-06-05 13:12:25,648 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:25,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:25,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:25,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:25,649 INFO L87 Difference]: Start difference. First operand 1426 states and 4209 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:25,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:25,788 INFO L93 Difference]: Finished difference Result 1711 states and 4999 transitions. [2021-06-05 13:12:25,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:25,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:25,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:25,790 INFO L225 Difference]: With dead ends: 1711 [2021-06-05 13:12:25,790 INFO L226 Difference]: Without dead ends: 1632 [2021-06-05 13:12:25,790 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:25,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2021-06-05 13:12:25,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1428. [2021-06-05 13:12:25,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 2.9530483531885072) internal successors, (4214), 1427 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:25,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 4214 transitions. [2021-06-05 13:12:25,806 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 4214 transitions. Word has length 26 [2021-06-05 13:12:25,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:25,807 INFO L482 AbstractCegarLoop]: Abstraction has 1428 states and 4214 transitions. [2021-06-05 13:12:25,807 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:25,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 4214 transitions. [2021-06-05 13:12:25,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:25,808 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:25,808 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:25,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-06-05 13:12:25,808 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:25,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:25,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1277607100, now seen corresponding path program 139 times [2021-06-05 13:12:25,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:25,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119623984] [2021-06-05 13:12:25,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:25,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:25,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119623984] [2021-06-05 13:12:25,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119623984] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:25,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:25,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:25,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536171420] [2021-06-05 13:12:25,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:25,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:25,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:25,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:25,870 INFO L87 Difference]: Start difference. First operand 1428 states and 4214 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:26,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:26,008 INFO L93 Difference]: Finished difference Result 1743 states and 5115 transitions. [2021-06-05 13:12:26,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:26,009 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:26,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:26,011 INFO L225 Difference]: With dead ends: 1743 [2021-06-05 13:12:26,011 INFO L226 Difference]: Without dead ends: 1660 [2021-06-05 13:12:26,011 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:26,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-06-05 13:12:26,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1428. [2021-06-05 13:12:26,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 2.9516468114926417) internal successors, (4212), 1427 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:26,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 4212 transitions. [2021-06-05 13:12:26,030 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 4212 transitions. Word has length 26 [2021-06-05 13:12:26,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:26,030 INFO L482 AbstractCegarLoop]: Abstraction has 1428 states and 4212 transitions. [2021-06-05 13:12:26,030 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:26,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 4212 transitions. [2021-06-05 13:12:26,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:26,032 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:26,032 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:26,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-06-05 13:12:26,032 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:26,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:26,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1532456486, now seen corresponding path program 140 times [2021-06-05 13:12:26,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:26,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080317120] [2021-06-05 13:12:26,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:26,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:26,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080317120] [2021-06-05 13:12:26,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080317120] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:26,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:26,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:26,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635694906] [2021-06-05 13:12:26,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:26,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:26,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:26,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:26,087 INFO L87 Difference]: Start difference. First operand 1428 states and 4212 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:26,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:26,229 INFO L93 Difference]: Finished difference Result 1741 states and 5077 transitions. [2021-06-05 13:12:26,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:26,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:26,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:26,232 INFO L225 Difference]: With dead ends: 1741 [2021-06-05 13:12:26,232 INFO L226 Difference]: Without dead ends: 1630 [2021-06-05 13:12:26,232 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:26,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2021-06-05 13:12:26,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1396. [2021-06-05 13:12:26,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1395 states have (on average 2.9505376344086023) internal successors, (4116), 1395 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:26,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 4116 transitions. [2021-06-05 13:12:26,256 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 4116 transitions. Word has length 26 [2021-06-05 13:12:26,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:26,257 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 4116 transitions. [2021-06-05 13:12:26,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:26,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 4116 transitions. [2021-06-05 13:12:26,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:26,258 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:26,258 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:26,258 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-06-05 13:12:26,258 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:26,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:26,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1774043234, now seen corresponding path program 141 times [2021-06-05 13:12:26,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:26,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837630542] [2021-06-05 13:12:26,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:26,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:26,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837630542] [2021-06-05 13:12:26,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837630542] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:26,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:26,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:26,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242690847] [2021-06-05 13:12:26,324 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:26,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:26,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:26,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:26,325 INFO L87 Difference]: Start difference. First operand 1396 states and 4116 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:26,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:26,470 INFO L93 Difference]: Finished difference Result 1586 states and 4638 transitions. [2021-06-05 13:12:26,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:26,470 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:26,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:26,472 INFO L225 Difference]: With dead ends: 1586 [2021-06-05 13:12:26,472 INFO L226 Difference]: Without dead ends: 1507 [2021-06-05 13:12:26,473 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:26,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2021-06-05 13:12:26,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1406. [2021-06-05 13:12:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 2.9508896797153024) internal successors, (4146), 1405 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:26,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4146 transitions. [2021-06-05 13:12:26,488 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4146 transitions. Word has length 26 [2021-06-05 13:12:26,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:26,488 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 4146 transitions. [2021-06-05 13:12:26,488 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:26,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4146 transitions. [2021-06-05 13:12:26,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:26,490 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:26,490 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:26,490 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-06-05 13:12:26,490 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:26,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:26,490 INFO L82 PathProgramCache]: Analyzing trace with hash -904598626, now seen corresponding path program 142 times [2021-06-05 13:12:26,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:26,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939076312] [2021-06-05 13:12:26,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:26,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:26,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939076312] [2021-06-05 13:12:26,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939076312] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:26,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:26,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:26,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628164193] [2021-06-05 13:12:26,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:26,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:26,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:26,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:26,550 INFO L87 Difference]: Start difference. First operand 1406 states and 4146 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:26,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:26,688 INFO L93 Difference]: Finished difference Result 1622 states and 4736 transitions. [2021-06-05 13:12:26,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:26,689 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:26,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:26,690 INFO L225 Difference]: With dead ends: 1622 [2021-06-05 13:12:26,691 INFO L226 Difference]: Without dead ends: 1518 [2021-06-05 13:12:26,691 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:26,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-06-05 13:12:26,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1422. [2021-06-05 13:12:26,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1421 states have (on average 2.952146375791696) internal successors, (4195), 1421 states have internal predecessors, (4195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:26,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4195 transitions. [2021-06-05 13:12:26,707 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4195 transitions. Word has length 26 [2021-06-05 13:12:26,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:26,707 INFO L482 AbstractCegarLoop]: Abstraction has 1422 states and 4195 transitions. [2021-06-05 13:12:26,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:26,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4195 transitions. [2021-06-05 13:12:26,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:26,708 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:26,708 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:26,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-06-05 13:12:26,708 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:26,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:26,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1921657440, now seen corresponding path program 143 times [2021-06-05 13:12:26,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:26,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885244340] [2021-06-05 13:12:26,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:26,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:26,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:26,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885244340] [2021-06-05 13:12:26,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885244340] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:26,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:26,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:26,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170921453] [2021-06-05 13:12:26,786 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:26,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:26,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:26,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:26,786 INFO L87 Difference]: Start difference. First operand 1422 states and 4195 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:26,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:26,964 INFO L93 Difference]: Finished difference Result 1651 states and 4814 transitions. [2021-06-05 13:12:26,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:26,964 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:26,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:26,966 INFO L225 Difference]: With dead ends: 1651 [2021-06-05 13:12:26,966 INFO L226 Difference]: Without dead ends: 1572 [2021-06-05 13:12:26,967 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:26,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2021-06-05 13:12:26,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1446. [2021-06-05 13:12:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1445 states have (on average 2.9487889273356402) internal successors, (4261), 1445 states have internal predecessors, (4261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:26,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 4261 transitions. [2021-06-05 13:12:26,982 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 4261 transitions. Word has length 26 [2021-06-05 13:12:26,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:26,982 INFO L482 AbstractCegarLoop]: Abstraction has 1446 states and 4261 transitions. [2021-06-05 13:12:26,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:26,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 4261 transitions. [2021-06-05 13:12:26,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:26,984 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:26,984 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:26,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-06-05 13:12:26,984 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:26,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:26,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1348260164, now seen corresponding path program 144 times [2021-06-05 13:12:26,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:26,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46492659] [2021-06-05 13:12:26,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:27,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:27,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:27,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46492659] [2021-06-05 13:12:27,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46492659] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:27,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:27,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:27,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112606667] [2021-06-05 13:12:27,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:27,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:27,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:27,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:27,056 INFO L87 Difference]: Start difference. First operand 1446 states and 4261 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:27,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:27,237 INFO L93 Difference]: Finished difference Result 1620 states and 4730 transitions. [2021-06-05 13:12:27,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:27,237 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:27,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:27,239 INFO L225 Difference]: With dead ends: 1620 [2021-06-05 13:12:27,239 INFO L226 Difference]: Without dead ends: 1509 [2021-06-05 13:12:27,239 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:27,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-06-05 13:12:27,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1461. [2021-06-05 13:12:27,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1460 states have (on average 2.9506849315068493) internal successors, (4308), 1460 states have internal predecessors, (4308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4308 transitions. [2021-06-05 13:12:27,255 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4308 transitions. Word has length 26 [2021-06-05 13:12:27,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:27,255 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4308 transitions. [2021-06-05 13:12:27,255 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:27,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4308 transitions. [2021-06-05 13:12:27,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:27,257 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:27,257 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:27,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-06-05 13:12:27,257 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:27,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:27,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1934811012, now seen corresponding path program 145 times [2021-06-05 13:12:27,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:27,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020501535] [2021-06-05 13:12:27,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:27,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:27,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:27,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020501535] [2021-06-05 13:12:27,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020501535] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:27,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:27,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:27,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624500219] [2021-06-05 13:12:27,320 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:27,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:27,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:27,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:27,320 INFO L87 Difference]: Start difference. First operand 1461 states and 4308 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:27,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:27,491 INFO L93 Difference]: Finished difference Result 1737 states and 5065 transitions. [2021-06-05 13:12:27,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:27,492 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:27,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:27,494 INFO L225 Difference]: With dead ends: 1737 [2021-06-05 13:12:27,494 INFO L226 Difference]: Without dead ends: 1640 [2021-06-05 13:12:27,494 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:27,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2021-06-05 13:12:27,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1487. [2021-06-05 13:12:27,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1486 states have (on average 2.958277254374159) internal successors, (4396), 1486 states have internal predecessors, (4396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:27,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 4396 transitions. [2021-06-05 13:12:27,511 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 4396 transitions. Word has length 26 [2021-06-05 13:12:27,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:27,511 INFO L482 AbstractCegarLoop]: Abstraction has 1487 states and 4396 transitions. [2021-06-05 13:12:27,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:27,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 4396 transitions. [2021-06-05 13:12:27,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:27,513 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:27,513 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:27,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-06-05 13:12:27,513 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:27,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:27,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1222743170, now seen corresponding path program 146 times [2021-06-05 13:12:27,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:27,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289571325] [2021-06-05 13:12:27,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:27,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:27,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289571325] [2021-06-05 13:12:27,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289571325] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:27,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:27,589 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:27,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616041598] [2021-06-05 13:12:27,590 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:27,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:27,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:27,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:27,590 INFO L87 Difference]: Start difference. First operand 1487 states and 4396 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:27,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:27,796 INFO L93 Difference]: Finished difference Result 1672 states and 4884 transitions. [2021-06-05 13:12:27,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:27,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:27,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:27,800 INFO L225 Difference]: With dead ends: 1672 [2021-06-05 13:12:27,800 INFO L226 Difference]: Without dead ends: 1584 [2021-06-05 13:12:27,800 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:27,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-06-05 13:12:27,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1485. [2021-06-05 13:12:27,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1484 states have (on average 2.9588948787061993) internal successors, (4391), 1484 states have internal predecessors, (4391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:27,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4391 transitions. [2021-06-05 13:12:27,823 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4391 transitions. Word has length 26 [2021-06-05 13:12:27,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:27,823 INFO L482 AbstractCegarLoop]: Abstraction has 1485 states and 4391 transitions. [2021-06-05 13:12:27,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:27,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4391 transitions. [2021-06-05 13:12:27,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:27,825 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:27,825 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:27,825 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-06-05 13:12:27,825 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:27,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:27,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1906471334, now seen corresponding path program 147 times [2021-06-05 13:12:27,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:27,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102678672] [2021-06-05 13:12:27,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:27,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:27,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102678672] [2021-06-05 13:12:27,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102678672] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:27,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:27,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:27,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095983117] [2021-06-05 13:12:27,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:27,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:27,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:27,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:27,919 INFO L87 Difference]: Start difference. First operand 1485 states and 4391 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:28,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:28,095 INFO L93 Difference]: Finished difference Result 1717 states and 5001 transitions. [2021-06-05 13:12:28,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:28,095 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:28,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:28,097 INFO L225 Difference]: With dead ends: 1717 [2021-06-05 13:12:28,097 INFO L226 Difference]: Without dead ends: 1584 [2021-06-05 13:12:28,097 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 82.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:28,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-06-05 13:12:28,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1461. [2021-06-05 13:12:28,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1460 states have (on average 2.956849315068493) internal successors, (4317), 1460 states have internal predecessors, (4317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:28,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4317 transitions. [2021-06-05 13:12:28,113 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4317 transitions. Word has length 26 [2021-06-05 13:12:28,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:28,113 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4317 transitions. [2021-06-05 13:12:28,114 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:28,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4317 transitions. [2021-06-05 13:12:28,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:28,115 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:28,115 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:28,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-06-05 13:12:28,115 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:28,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:28,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1377180688, now seen corresponding path program 148 times [2021-06-05 13:12:28,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:28,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608216719] [2021-06-05 13:12:28,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:28,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:28,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:28,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608216719] [2021-06-05 13:12:28,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608216719] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:28,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:28,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:28,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674426869] [2021-06-05 13:12:28,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:28,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:28,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:28,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:28,183 INFO L87 Difference]: Start difference. First operand 1461 states and 4317 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:28,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:28,353 INFO L93 Difference]: Finished difference Result 1724 states and 4996 transitions. [2021-06-05 13:12:28,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:28,353 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:28,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:28,355 INFO L225 Difference]: With dead ends: 1724 [2021-06-05 13:12:28,355 INFO L226 Difference]: Without dead ends: 1544 [2021-06-05 13:12:28,356 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:28,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-06-05 13:12:28,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1422. [2021-06-05 13:12:28,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1421 states have (on average 2.938775510204082) internal successors, (4176), 1421 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:28,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4176 transitions. [2021-06-05 13:12:28,371 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4176 transitions. Word has length 26 [2021-06-05 13:12:28,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:28,371 INFO L482 AbstractCegarLoop]: Abstraction has 1422 states and 4176 transitions. [2021-06-05 13:12:28,371 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:28,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4176 transitions. [2021-06-05 13:12:28,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:28,372 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:28,372 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:28,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-06-05 13:12:28,372 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:28,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:28,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1039485756, now seen corresponding path program 149 times [2021-06-05 13:12:28,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:28,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554450189] [2021-06-05 13:12:28,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:28,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:28,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554450189] [2021-06-05 13:12:28,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554450189] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:28,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:28,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:28,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955714280] [2021-06-05 13:12:28,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:28,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:28,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:28,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:28,451 INFO L87 Difference]: Start difference. First operand 1422 states and 4176 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:28,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:28,627 INFO L93 Difference]: Finished difference Result 1593 states and 4622 transitions. [2021-06-05 13:12:28,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:28,628 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:28,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:28,630 INFO L225 Difference]: With dead ends: 1593 [2021-06-05 13:12:28,630 INFO L226 Difference]: Without dead ends: 1514 [2021-06-05 13:12:28,630 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:28,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-06-05 13:12:28,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1421. [2021-06-05 13:12:28,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1420 states have (on average 2.9380281690140846) internal successors, (4172), 1420 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:28,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 4172 transitions. [2021-06-05 13:12:28,645 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 4172 transitions. Word has length 26 [2021-06-05 13:12:28,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:28,645 INFO L482 AbstractCegarLoop]: Abstraction has 1421 states and 4172 transitions. [2021-06-05 13:12:28,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:28,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 4172 transitions. [2021-06-05 13:12:28,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:28,647 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:28,647 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:28,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-06-05 13:12:28,647 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:28,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:28,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1908930364, now seen corresponding path program 150 times [2021-06-05 13:12:28,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:28,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434539546] [2021-06-05 13:12:28,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:28,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:28,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:28,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434539546] [2021-06-05 13:12:28,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434539546] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:28,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:28,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:28,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367046104] [2021-06-05 13:12:28,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:28,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:28,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:28,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:28,735 INFO L87 Difference]: Start difference. First operand 1421 states and 4172 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:28,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:28,913 INFO L93 Difference]: Finished difference Result 1587 states and 4608 transitions. [2021-06-05 13:12:28,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:28,913 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:28,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:28,915 INFO L225 Difference]: With dead ends: 1587 [2021-06-05 13:12:28,915 INFO L226 Difference]: Without dead ends: 1483 [2021-06-05 13:12:28,915 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:28,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2021-06-05 13:12:28,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1422. [2021-06-05 13:12:28,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1421 states have (on average 2.936664320900774) internal successors, (4173), 1421 states have internal predecessors, (4173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:28,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4173 transitions. [2021-06-05 13:12:28,930 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4173 transitions. Word has length 26 [2021-06-05 13:12:28,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:28,930 INFO L482 AbstractCegarLoop]: Abstraction has 1422 states and 4173 transitions. [2021-06-05 13:12:28,930 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:28,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4173 transitions. [2021-06-05 13:12:28,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:28,932 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:28,932 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:28,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-06-05 13:12:28,932 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:28,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:28,932 INFO L82 PathProgramCache]: Analyzing trace with hash 440219134, now seen corresponding path program 151 times [2021-06-05 13:12:28,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:28,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280234188] [2021-06-05 13:12:28,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:29,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:29,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:29,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280234188] [2021-06-05 13:12:29,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280234188] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:29,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:29,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:29,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491216157] [2021-06-05 13:12:29,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:29,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:29,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:29,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:29,001 INFO L87 Difference]: Start difference. First operand 1422 states and 4173 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:29,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:29,180 INFO L93 Difference]: Finished difference Result 1574 states and 4561 transitions. [2021-06-05 13:12:29,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:29,180 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:29,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:29,182 INFO L225 Difference]: With dead ends: 1574 [2021-06-05 13:12:29,182 INFO L226 Difference]: Without dead ends: 1495 [2021-06-05 13:12:29,182 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:29,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2021-06-05 13:12:29,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1423. [2021-06-05 13:12:29,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1422 states have (on average 2.9374120956399437) internal successors, (4177), 1422 states have internal predecessors, (4177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:29,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 4177 transitions. [2021-06-05 13:12:29,197 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 4177 transitions. Word has length 26 [2021-06-05 13:12:29,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:29,197 INFO L482 AbstractCegarLoop]: Abstraction has 1423 states and 4177 transitions. [2021-06-05 13:12:29,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:29,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 4177 transitions. [2021-06-05 13:12:29,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:29,199 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:29,199 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:29,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-06-05 13:12:29,199 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:29,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:29,199 INFO L82 PathProgramCache]: Analyzing trace with hash -133178142, now seen corresponding path program 152 times [2021-06-05 13:12:29,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:29,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30704289] [2021-06-05 13:12:29,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:29,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:29,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:29,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30704289] [2021-06-05 13:12:29,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30704289] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:29,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:29,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:29,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760216218] [2021-06-05 13:12:29,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:29,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:29,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:29,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:29,263 INFO L87 Difference]: Start difference. First operand 1423 states and 4177 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:29,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:29,445 INFO L93 Difference]: Finished difference Result 1563 states and 4535 transitions. [2021-06-05 13:12:29,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:29,446 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:29,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:29,448 INFO L225 Difference]: With dead ends: 1563 [2021-06-05 13:12:29,448 INFO L226 Difference]: Without dead ends: 1480 [2021-06-05 13:12:29,448 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:29,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-06-05 13:12:29,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1424. [2021-06-05 13:12:29,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 2.936753338018271) internal successors, (4179), 1423 states have internal predecessors, (4179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:29,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 4179 transitions. [2021-06-05 13:12:29,463 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 4179 transitions. Word has length 26 [2021-06-05 13:12:29,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:29,463 INFO L482 AbstractCegarLoop]: Abstraction has 1424 states and 4179 transitions. [2021-06-05 13:12:29,464 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:29,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 4179 transitions. [2021-06-05 13:12:29,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:29,465 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:29,465 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:29,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-06-05 13:12:29,465 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:29,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:29,465 INFO L82 PathProgramCache]: Analyzing trace with hash 453372706, now seen corresponding path program 153 times [2021-06-05 13:12:29,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:29,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029260983] [2021-06-05 13:12:29,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:29,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:29,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029260983] [2021-06-05 13:12:29,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029260983] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:29,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:29,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:29,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982014681] [2021-06-05 13:12:29,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:29,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:29,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:29,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:29,547 INFO L87 Difference]: Start difference. First operand 1424 states and 4179 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:29,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:29,720 INFO L93 Difference]: Finished difference Result 1627 states and 4733 transitions. [2021-06-05 13:12:29,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:29,720 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:29,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:29,722 INFO L225 Difference]: With dead ends: 1627 [2021-06-05 13:12:29,722 INFO L226 Difference]: Without dead ends: 1530 [2021-06-05 13:12:29,722 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:29,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2021-06-05 13:12:29,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1431. [2021-06-05 13:12:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1430 states have (on average 2.9391608391608393) internal successors, (4203), 1430 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:29,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 4203 transitions. [2021-06-05 13:12:29,739 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 4203 transitions. Word has length 26 [2021-06-05 13:12:29,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:29,739 INFO L482 AbstractCegarLoop]: Abstraction has 1431 states and 4203 transitions. [2021-06-05 13:12:29,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:29,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 4203 transitions. [2021-06-05 13:12:29,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:29,741 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:29,741 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:29,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-06-05 13:12:29,741 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:29,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:29,741 INFO L82 PathProgramCache]: Analyzing trace with hash -258695136, now seen corresponding path program 154 times [2021-06-05 13:12:29,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:29,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118134589] [2021-06-05 13:12:29,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:29,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:29,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118134589] [2021-06-05 13:12:29,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118134589] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:29,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:29,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:29,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287735155] [2021-06-05 13:12:29,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:29,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:29,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:29,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:29,805 INFO L87 Difference]: Start difference. First operand 1431 states and 4203 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:29,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:29,984 INFO L93 Difference]: Finished difference Result 1607 states and 4663 transitions. [2021-06-05 13:12:29,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:29,985 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:29,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:29,987 INFO L225 Difference]: With dead ends: 1607 [2021-06-05 13:12:29,987 INFO L226 Difference]: Without dead ends: 1519 [2021-06-05 13:12:29,987 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:29,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2021-06-05 13:12:30,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1430. [2021-06-05 13:12:30,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1429 states have (on average 2.941217634709587) internal successors, (4203), 1429 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:30,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 4203 transitions. [2021-06-05 13:12:30,003 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 4203 transitions. Word has length 26 [2021-06-05 13:12:30,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:30,003 INFO L482 AbstractCegarLoop]: Abstraction has 1430 states and 4203 transitions. [2021-06-05 13:12:30,003 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:30,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 4203 transitions. [2021-06-05 13:12:30,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:30,005 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:30,005 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:30,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-06-05 13:12:30,005 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:30,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:30,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1952637280, now seen corresponding path program 155 times [2021-06-05 13:12:30,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:30,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282251561] [2021-06-05 13:12:30,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:30,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:30,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:30,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282251561] [2021-06-05 13:12:30,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282251561] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:30,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:30,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:30,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026451061] [2021-06-05 13:12:30,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:30,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:30,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:30,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:30,067 INFO L87 Difference]: Start difference. First operand 1430 states and 4203 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:30,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:30,244 INFO L93 Difference]: Finished difference Result 1567 states and 4558 transitions. [2021-06-05 13:12:30,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:30,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:30,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:30,246 INFO L225 Difference]: With dead ends: 1567 [2021-06-05 13:12:30,246 INFO L226 Difference]: Without dead ends: 1488 [2021-06-05 13:12:30,246 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:30,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2021-06-05 13:12:30,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1429. [2021-06-05 13:12:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1429 states, 1428 states have (on average 2.9404761904761907) internal successors, (4199), 1428 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 4199 transitions. [2021-06-05 13:12:30,262 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 4199 transitions. Word has length 26 [2021-06-05 13:12:30,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:30,262 INFO L482 AbstractCegarLoop]: Abstraction has 1429 states and 4199 transitions. [2021-06-05 13:12:30,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:30,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 4199 transitions. [2021-06-05 13:12:30,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:30,263 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:30,263 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:30,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-06-05 13:12:30,263 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:30,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:30,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1379240004, now seen corresponding path program 156 times [2021-06-05 13:12:30,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:30,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629934870] [2021-06-05 13:12:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:30,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:30,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:30,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629934870] [2021-06-05 13:12:30,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629934870] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:30,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:30,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:30,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385141591] [2021-06-05 13:12:30,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:30,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:30,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:30,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:30,327 INFO L87 Difference]: Start difference. First operand 1429 states and 4199 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:30,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:30,510 INFO L93 Difference]: Finished difference Result 1572 states and 4563 transitions. [2021-06-05 13:12:30,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:30,510 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:30,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:30,512 INFO L225 Difference]: With dead ends: 1572 [2021-06-05 13:12:30,512 INFO L226 Difference]: Without dead ends: 1489 [2021-06-05 13:12:30,512 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:30,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2021-06-05 13:12:30,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1430. [2021-06-05 13:12:30,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1429 states have (on average 2.9391182645206437) internal successors, (4200), 1429 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 4200 transitions. [2021-06-05 13:12:30,527 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 4200 transitions. Word has length 26 [2021-06-05 13:12:30,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:30,528 INFO L482 AbstractCegarLoop]: Abstraction has 1430 states and 4200 transitions. [2021-06-05 13:12:30,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 4200 transitions. [2021-06-05 13:12:30,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:30,529 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:30,529 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:30,529 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-06-05 13:12:30,529 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:30,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:30,529 INFO L82 PathProgramCache]: Analyzing trace with hash 560492734, now seen corresponding path program 157 times [2021-06-05 13:12:30,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:30,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400195657] [2021-06-05 13:12:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:30,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:30,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:30,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400195657] [2021-06-05 13:12:30,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400195657] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:30,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:30,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:30,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671895048] [2021-06-05 13:12:30,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:30,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:30,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:30,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:30,596 INFO L87 Difference]: Start difference. First operand 1430 states and 4200 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:30,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:30,767 INFO L93 Difference]: Finished difference Result 1645 states and 4769 transitions. [2021-06-05 13:12:30,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:30,768 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:30,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:30,770 INFO L225 Difference]: With dead ends: 1645 [2021-06-05 13:12:30,770 INFO L226 Difference]: Without dead ends: 1554 [2021-06-05 13:12:30,770 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:30,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-06-05 13:12:30,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1426. [2021-06-05 13:12:30,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 2.937543859649123) internal successors, (4186), 1425 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:30,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4186 transitions. [2021-06-05 13:12:30,785 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4186 transitions. Word has length 26 [2021-06-05 13:12:30,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:30,785 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 4186 transitions. [2021-06-05 13:12:30,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:30,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4186 transitions. [2021-06-05 13:12:30,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:30,787 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:30,787 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:30,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-06-05 13:12:30,787 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:30,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:30,787 INFO L82 PathProgramCache]: Analyzing trace with hash 130172868, now seen corresponding path program 158 times [2021-06-05 13:12:30,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:30,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018511309] [2021-06-05 13:12:30,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:30,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:30,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:30,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018511309] [2021-06-05 13:12:30,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018511309] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:30,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:30,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:30,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198188937] [2021-06-05 13:12:30,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:30,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:30,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:30,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:30,863 INFO L87 Difference]: Start difference. First operand 1426 states and 4186 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:31,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:31,055 INFO L93 Difference]: Finished difference Result 1595 states and 4605 transitions. [2021-06-05 13:12:31,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:31,055 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:31,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:31,057 INFO L225 Difference]: With dead ends: 1595 [2021-06-05 13:12:31,057 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 13:12:31,057 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:31,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 13:12:31,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1431. [2021-06-05 13:12:31,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1430 states have (on average 2.9342657342657343) internal successors, (4196), 1430 states have internal predecessors, (4196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:31,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 4196 transitions. [2021-06-05 13:12:31,072 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 4196 transitions. Word has length 26 [2021-06-05 13:12:31,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:31,073 INFO L482 AbstractCegarLoop]: Abstraction has 1431 states and 4196 transitions. [2021-06-05 13:12:31,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:31,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 4196 transitions. [2021-06-05 13:12:31,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:31,074 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:31,092 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:31,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-06-05 13:12:31,092 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:31,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:31,093 INFO L82 PathProgramCache]: Analyzing trace with hash -609950332, now seen corresponding path program 159 times [2021-06-05 13:12:31,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:31,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090572218] [2021-06-05 13:12:31,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:31,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:31,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:31,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090572218] [2021-06-05 13:12:31,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090572218] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:31,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:31,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:31,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230921148] [2021-06-05 13:12:31,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:31,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:31,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:31,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:31,166 INFO L87 Difference]: Start difference. First operand 1431 states and 4196 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:31,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:31,348 INFO L93 Difference]: Finished difference Result 1626 states and 4726 transitions. [2021-06-05 13:12:31,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:31,348 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:31,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:31,350 INFO L225 Difference]: With dead ends: 1626 [2021-06-05 13:12:31,350 INFO L226 Difference]: Without dead ends: 1529 [2021-06-05 13:12:31,350 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:31,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2021-06-05 13:12:31,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1429. [2021-06-05 13:12:31,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1429 states, 1428 states have (on average 2.9327731092436973) internal successors, (4188), 1428 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:31,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 4188 transitions. [2021-06-05 13:12:31,365 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 4188 transitions. Word has length 26 [2021-06-05 13:12:31,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:31,366 INFO L482 AbstractCegarLoop]: Abstraction has 1429 states and 4188 transitions. [2021-06-05 13:12:31,366 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:31,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 4188 transitions. [2021-06-05 13:12:31,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:31,367 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:31,367 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:31,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-06-05 13:12:31,367 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:31,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:31,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1322018174, now seen corresponding path program 160 times [2021-06-05 13:12:31,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:31,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210920032] [2021-06-05 13:12:31,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:31,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:31,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:31,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210920032] [2021-06-05 13:12:31,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210920032] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:31,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:31,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:31,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739268990] [2021-06-05 13:12:31,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:31,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:31,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:31,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:31,451 INFO L87 Difference]: Start difference. First operand 1429 states and 4188 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:31,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:31,633 INFO L93 Difference]: Finished difference Result 1603 states and 4654 transitions. [2021-06-05 13:12:31,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:31,633 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:31,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:31,635 INFO L225 Difference]: With dead ends: 1603 [2021-06-05 13:12:31,635 INFO L226 Difference]: Without dead ends: 1517 [2021-06-05 13:12:31,636 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:31,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2021-06-05 13:12:31,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1437. [2021-06-05 13:12:31,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1436 states have (on average 2.932451253481894) internal successors, (4211), 1436 states have internal predecessors, (4211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:31,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 4211 transitions. [2021-06-05 13:12:31,651 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 4211 transitions. Word has length 26 [2021-06-05 13:12:31,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:31,652 INFO L482 AbstractCegarLoop]: Abstraction has 1437 states and 4211 transitions. [2021-06-05 13:12:31,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:31,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 4211 transitions. [2021-06-05 13:12:31,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:31,653 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:31,653 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:31,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-06-05 13:12:31,653 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:31,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:31,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1411777824, now seen corresponding path program 161 times [2021-06-05 13:12:31,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:31,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092409256] [2021-06-05 13:12:31,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:31,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:31,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:31,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092409256] [2021-06-05 13:12:31,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092409256] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:31,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:31,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:31,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245192477] [2021-06-05 13:12:31,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:31,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:31,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:31,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:31,715 INFO L87 Difference]: Start difference. First operand 1437 states and 4211 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:31,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:31,890 INFO L93 Difference]: Finished difference Result 1577 states and 4563 transitions. [2021-06-05 13:12:31,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:31,890 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:31,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:31,892 INFO L225 Difference]: With dead ends: 1577 [2021-06-05 13:12:31,892 INFO L226 Difference]: Without dead ends: 1482 [2021-06-05 13:12:31,892 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:31,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-06-05 13:12:31,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1420. [2021-06-05 13:12:31,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 2.9358703312191685) internal successors, (4166), 1419 states have internal predecessors, (4166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:31,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 4166 transitions. [2021-06-05 13:12:31,907 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 4166 transitions. Word has length 26 [2021-06-05 13:12:31,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:31,907 INFO L482 AbstractCegarLoop]: Abstraction has 1420 states and 4166 transitions. [2021-06-05 13:12:31,907 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:31,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 4166 transitions. [2021-06-05 13:12:31,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:31,909 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:31,909 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:31,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-06-05 13:12:31,909 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:31,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:31,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1692751788, now seen corresponding path program 162 times [2021-06-05 13:12:31,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:31,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21873710] [2021-06-05 13:12:31,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:31,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:31,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21873710] [2021-06-05 13:12:31,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21873710] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:31,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:31,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:31,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57596110] [2021-06-05 13:12:31,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:31,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:31,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:31,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:31,976 INFO L87 Difference]: Start difference. First operand 1420 states and 4166 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:32,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:32,137 INFO L93 Difference]: Finished difference Result 1724 states and 5023 transitions. [2021-06-05 13:12:32,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:32,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:32,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:32,140 INFO L225 Difference]: With dead ends: 1724 [2021-06-05 13:12:32,140 INFO L226 Difference]: Without dead ends: 1639 [2021-06-05 13:12:32,141 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:32,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-06-05 13:12:32,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1456. [2021-06-05 13:12:32,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 2.9381443298969074) internal successors, (4275), 1455 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:32,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 4275 transitions. [2021-06-05 13:12:32,165 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 4275 transitions. Word has length 26 [2021-06-05 13:12:32,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:32,165 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 4275 transitions. [2021-06-05 13:12:32,165 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:32,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 4275 transitions. [2021-06-05 13:12:32,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:32,168 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:32,168 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:32,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-06-05 13:12:32,168 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:32,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:32,168 INFO L82 PathProgramCache]: Analyzing trace with hash 2028818232, now seen corresponding path program 163 times [2021-06-05 13:12:32,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:32,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967497254] [2021-06-05 13:12:32,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:32,240 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:32,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967497254] [2021-06-05 13:12:32,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967497254] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:32,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:32,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:32,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48722295] [2021-06-05 13:12:32,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:32,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:32,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:32,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:32,241 INFO L87 Difference]: Start difference. First operand 1456 states and 4275 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:32,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:32,422 INFO L93 Difference]: Finished difference Result 1767 states and 5149 transitions. [2021-06-05 13:12:32,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:32,422 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:32,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:32,424 INFO L225 Difference]: With dead ends: 1767 [2021-06-05 13:12:32,424 INFO L226 Difference]: Without dead ends: 1619 [2021-06-05 13:12:32,424 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:32,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2021-06-05 13:12:32,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1417. [2021-06-05 13:12:32,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1416 states have (on average 2.939265536723164) internal successors, (4162), 1416 states have internal predecessors, (4162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 4162 transitions. [2021-06-05 13:12:32,440 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 4162 transitions. Word has length 26 [2021-06-05 13:12:32,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:32,440 INFO L482 AbstractCegarLoop]: Abstraction has 1417 states and 4162 transitions. [2021-06-05 13:12:32,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:32,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 4162 transitions. [2021-06-05 13:12:32,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:32,441 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:32,441 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:32,442 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-06-05 13:12:32,442 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:32,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:32,442 INFO L82 PathProgramCache]: Analyzing trace with hash 891859190, now seen corresponding path program 164 times [2021-06-05 13:12:32,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:32,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655605045] [2021-06-05 13:12:32,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:32,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:32,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:32,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655605045] [2021-06-05 13:12:32,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655605045] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:32,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:32,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:32,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318508795] [2021-06-05 13:12:32,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:32,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:32,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:32,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:32,503 INFO L87 Difference]: Start difference. First operand 1417 states and 4162 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:32,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:32,674 INFO L93 Difference]: Finished difference Result 1698 states and 4940 transitions. [2021-06-05 13:12:32,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:32,675 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:32,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:32,677 INFO L225 Difference]: With dead ends: 1698 [2021-06-05 13:12:32,677 INFO L226 Difference]: Without dead ends: 1613 [2021-06-05 13:12:32,677 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:32,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2021-06-05 13:12:32,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1419. [2021-06-05 13:12:32,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1418 states have (on average 2.9386459802538787) internal successors, (4167), 1418 states have internal predecessors, (4167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 4167 transitions. [2021-06-05 13:12:32,693 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 4167 transitions. Word has length 26 [2021-06-05 13:12:32,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:32,693 INFO L482 AbstractCegarLoop]: Abstraction has 1419 states and 4167 transitions. [2021-06-05 13:12:32,693 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:32,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 4167 transitions. [2021-06-05 13:12:32,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:32,694 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:32,694 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:32,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-06-05 13:12:32,694 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:32,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:32,694 INFO L82 PathProgramCache]: Analyzing trace with hash 318461914, now seen corresponding path program 165 times [2021-06-05 13:12:32,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:32,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641686119] [2021-06-05 13:12:32,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:32,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:32,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:32,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641686119] [2021-06-05 13:12:32,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641686119] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:32,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:32,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:32,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194379893] [2021-06-05 13:12:32,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:32,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:32,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:32,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:32,765 INFO L87 Difference]: Start difference. First operand 1419 states and 4167 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:32,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:32,941 INFO L93 Difference]: Finished difference Result 1732 states and 5057 transitions. [2021-06-05 13:12:32,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:32,941 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:32,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:32,944 INFO L225 Difference]: With dead ends: 1732 [2021-06-05 13:12:32,944 INFO L226 Difference]: Without dead ends: 1649 [2021-06-05 13:12:32,944 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:32,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-06-05 13:12:32,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1438. [2021-06-05 13:12:32,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1437 states have (on average 2.942240779401531) internal successors, (4228), 1437 states have internal predecessors, (4228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:32,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4228 transitions. [2021-06-05 13:12:32,960 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4228 transitions. Word has length 26 [2021-06-05 13:12:32,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:32,960 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4228 transitions. [2021-06-05 13:12:32,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:32,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4228 transitions. [2021-06-05 13:12:32,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:32,962 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:32,962 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:32,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-06-05 13:12:32,962 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:32,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:32,962 INFO L82 PathProgramCache]: Analyzing trace with hash -930605222, now seen corresponding path program 166 times [2021-06-05 13:12:32,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:32,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111100670] [2021-06-05 13:12:32,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:33,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:33,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:33,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111100670] [2021-06-05 13:12:33,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111100670] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:33,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:33,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:33,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234104816] [2021-06-05 13:12:33,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:33,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:33,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:33,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:33,023 INFO L87 Difference]: Start difference. First operand 1438 states and 4228 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:33,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:33,199 INFO L93 Difference]: Finished difference Result 1748 states and 5073 transitions. [2021-06-05 13:12:33,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:33,200 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:33,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:33,202 INFO L225 Difference]: With dead ends: 1748 [2021-06-05 13:12:33,202 INFO L226 Difference]: Without dead ends: 1639 [2021-06-05 13:12:33,202 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:33,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-06-05 13:12:33,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1406. [2021-06-05 13:12:33,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 2.9395017793594307) internal successors, (4130), 1405 states have internal predecessors, (4130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:33,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4130 transitions. [2021-06-05 13:12:33,219 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4130 transitions. Word has length 26 [2021-06-05 13:12:33,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:33,219 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 4130 transitions. [2021-06-05 13:12:33,219 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:33,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4130 transitions. [2021-06-05 13:12:33,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:33,220 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:33,220 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:33,220 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-06-05 13:12:33,220 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:33,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:33,221 INFO L82 PathProgramCache]: Analyzing trace with hash -781109324, now seen corresponding path program 167 times [2021-06-05 13:12:33,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:33,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581435704] [2021-06-05 13:12:33,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:33,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:33,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:33,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581435704] [2021-06-05 13:12:33,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581435704] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:33,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:33,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 13:12:33,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178475470] [2021-06-05 13:12:33,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 13:12:33,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:33,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 13:12:33,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:12:33,263 INFO L87 Difference]: Start difference. First operand 1406 states and 4130 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:33,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:33,367 INFO L93 Difference]: Finished difference Result 1712 states and 4985 transitions. [2021-06-05 13:12:33,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 13:12:33,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:33,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:33,370 INFO L225 Difference]: With dead ends: 1712 [2021-06-05 13:12:33,370 INFO L226 Difference]: Without dead ends: 1615 [2021-06-05 13:12:33,370 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.4ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 13:12:33,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-06-05 13:12:33,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1488. [2021-06-05 13:12:33,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 2.9361129791526563) internal successors, (4366), 1487 states have internal predecessors, (4366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:33,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 4366 transitions. [2021-06-05 13:12:33,386 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 4366 transitions. Word has length 26 [2021-06-05 13:12:33,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:33,386 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 4366 transitions. [2021-06-05 13:12:33,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:33,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 4366 transitions. [2021-06-05 13:12:33,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:33,388 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:33,388 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:33,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-06-05 13:12:33,388 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:33,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:33,388 INFO L82 PathProgramCache]: Analyzing trace with hash 88335284, now seen corresponding path program 168 times [2021-06-05 13:12:33,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:33,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060824097] [2021-06-05 13:12:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:33,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:33,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060824097] [2021-06-05 13:12:33,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060824097] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:33,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:33,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:33,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346905609] [2021-06-05 13:12:33,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:33,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:33,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:33,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:33,439 INFO L87 Difference]: Start difference. First operand 1488 states and 4366 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:33,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:33,585 INFO L93 Difference]: Finished difference Result 1769 states and 5133 transitions. [2021-06-05 13:12:33,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:33,585 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:33,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:33,587 INFO L225 Difference]: With dead ends: 1769 [2021-06-05 13:12:33,587 INFO L226 Difference]: Without dead ends: 1570 [2021-06-05 13:12:33,588 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:33,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2021-06-05 13:12:33,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1462. [2021-06-05 13:12:33,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 2.926762491444216) internal successors, (4276), 1461 states have internal predecessors, (4276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:33,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 4276 transitions. [2021-06-05 13:12:33,605 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 4276 transitions. Word has length 26 [2021-06-05 13:12:33,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:33,605 INFO L482 AbstractCegarLoop]: Abstraction has 1462 states and 4276 transitions. [2021-06-05 13:12:33,605 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:33,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 4276 transitions. [2021-06-05 13:12:33,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:33,607 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:33,607 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:33,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-06-05 13:12:33,607 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:33,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:33,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1796117202, now seen corresponding path program 169 times [2021-06-05 13:12:33,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:33,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769143733] [2021-06-05 13:12:33,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:33,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:33,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769143733] [2021-06-05 13:12:33,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769143733] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:33,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:33,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:33,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932559797] [2021-06-05 13:12:33,657 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:33,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:33,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:33,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:33,658 INFO L87 Difference]: Start difference. First operand 1462 states and 4276 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:33,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:33,793 INFO L93 Difference]: Finished difference Result 1668 states and 4808 transitions. [2021-06-05 13:12:33,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:33,793 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:33,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:33,796 INFO L225 Difference]: With dead ends: 1668 [2021-06-05 13:12:33,796 INFO L226 Difference]: Without dead ends: 1571 [2021-06-05 13:12:33,796 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:33,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2021-06-05 13:12:33,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1452. [2021-06-05 13:12:33,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1451 states have (on average 2.9297036526533424) internal successors, (4251), 1451 states have internal predecessors, (4251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:33,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 4251 transitions. [2021-06-05 13:12:33,812 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 4251 transitions. Word has length 26 [2021-06-05 13:12:33,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:33,812 INFO L482 AbstractCegarLoop]: Abstraction has 1452 states and 4251 transitions. [2021-06-05 13:12:33,812 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:33,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 4251 transitions. [2021-06-05 13:12:33,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:33,813 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:33,813 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:33,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-06-05 13:12:33,813 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:33,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:33,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1629405486, now seen corresponding path program 170 times [2021-06-05 13:12:33,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:33,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533376976] [2021-06-05 13:12:33,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:33,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:33,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:33,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533376976] [2021-06-05 13:12:33,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533376976] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:33,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:33,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:33,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866398639] [2021-06-05 13:12:33,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:33,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:33,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:33,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:33,887 INFO L87 Difference]: Start difference. First operand 1452 states and 4251 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:34,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:34,058 INFO L93 Difference]: Finished difference Result 1677 states and 4834 transitions. [2021-06-05 13:12:34,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:34,058 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:34,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:34,061 INFO L225 Difference]: With dead ends: 1677 [2021-06-05 13:12:34,061 INFO L226 Difference]: Without dead ends: 1550 [2021-06-05 13:12:34,061 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:34,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2021-06-05 13:12:34,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1470. [2021-06-05 13:12:34,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 2.9183117767188564) internal successors, (4287), 1469 states have internal predecessors, (4287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:34,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4287 transitions. [2021-06-05 13:12:34,077 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4287 transitions. Word has length 26 [2021-06-05 13:12:34,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:34,077 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4287 transitions. [2021-06-05 13:12:34,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:34,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4287 transitions. [2021-06-05 13:12:34,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:34,078 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:34,078 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:34,078 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-06-05 13:12:34,079 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:34,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:34,079 INFO L82 PathProgramCache]: Analyzing trace with hash 623453304, now seen corresponding path program 171 times [2021-06-05 13:12:34,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:34,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880806229] [2021-06-05 13:12:34,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:34,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:34,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:34,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880806229] [2021-06-05 13:12:34,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880806229] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:34,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:34,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:34,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312440900] [2021-06-05 13:12:34,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:34,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:34,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:34,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:34,132 INFO L87 Difference]: Start difference. First operand 1470 states and 4287 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:34,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:34,266 INFO L93 Difference]: Finished difference Result 1737 states and 5007 transitions. [2021-06-05 13:12:34,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:34,266 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:34,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:34,268 INFO L225 Difference]: With dead ends: 1737 [2021-06-05 13:12:34,268 INFO L226 Difference]: Without dead ends: 1622 [2021-06-05 13:12:34,269 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:34,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-06-05 13:12:34,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1476. [2021-06-05 13:12:34,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1475 states have (on average 2.9125423728813558) internal successors, (4296), 1475 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:34,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 4296 transitions. [2021-06-05 13:12:34,291 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 4296 transitions. Word has length 26 [2021-06-05 13:12:34,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:34,292 INFO L482 AbstractCegarLoop]: Abstraction has 1476 states and 4296 transitions. [2021-06-05 13:12:34,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:34,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 4296 transitions. [2021-06-05 13:12:34,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:34,293 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:34,293 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:34,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-06-05 13:12:34,293 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:34,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:34,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1210004152, now seen corresponding path program 172 times [2021-06-05 13:12:34,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:34,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101932707] [2021-06-05 13:12:34,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:34,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:34,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:34,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101932707] [2021-06-05 13:12:34,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101932707] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:34,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:34,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:34,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339308292] [2021-06-05 13:12:34,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:34,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:34,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:34,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:34,353 INFO L87 Difference]: Start difference. First operand 1476 states and 4296 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:34,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:34,521 INFO L93 Difference]: Finished difference Result 1779 states and 5100 transitions. [2021-06-05 13:12:34,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:34,522 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:34,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:34,524 INFO L225 Difference]: With dead ends: 1779 [2021-06-05 13:12:34,524 INFO L226 Difference]: Without dead ends: 1623 [2021-06-05 13:12:34,524 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:34,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2021-06-05 13:12:34,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1498. [2021-06-05 13:12:34,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 2.9138276553106213) internal successors, (4362), 1497 states have internal predecessors, (4362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:34,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 4362 transitions. [2021-06-05 13:12:34,542 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 4362 transitions. Word has length 26 [2021-06-05 13:12:34,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:34,542 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 4362 transitions. [2021-06-05 13:12:34,542 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:34,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 4362 transitions. [2021-06-05 13:12:34,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:34,543 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:34,543 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:34,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-06-05 13:12:34,543 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:34,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:34,544 INFO L82 PathProgramCache]: Analyzing trace with hash 497936310, now seen corresponding path program 173 times [2021-06-05 13:12:34,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:34,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861233464] [2021-06-05 13:12:34,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:34,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:34,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:34,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861233464] [2021-06-05 13:12:34,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861233464] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:34,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:34,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:34,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059547634] [2021-06-05 13:12:34,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:34,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:34,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:34,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:34,604 INFO L87 Difference]: Start difference. First operand 1498 states and 4362 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:34,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:34,776 INFO L93 Difference]: Finished difference Result 1823 states and 5246 transitions. [2021-06-05 13:12:34,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:34,776 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:34,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:34,779 INFO L225 Difference]: With dead ends: 1823 [2021-06-05 13:12:34,779 INFO L226 Difference]: Without dead ends: 1667 [2021-06-05 13:12:34,779 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:34,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2021-06-05 13:12:34,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1522. [2021-06-05 13:12:34,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1521 states have (on average 2.9145299145299144) internal successors, (4433), 1521 states have internal predecessors, (4433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:34,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 4433 transitions. [2021-06-05 13:12:34,795 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 4433 transitions. Word has length 26 [2021-06-05 13:12:34,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:34,795 INFO L482 AbstractCegarLoop]: Abstraction has 1522 states and 4433 transitions. [2021-06-05 13:12:34,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:34,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 4433 transitions. [2021-06-05 13:12:34,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:34,797 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:34,797 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:34,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-06-05 13:12:34,797 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:34,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:34,797 INFO L82 PathProgramCache]: Analyzing trace with hash -465295700, now seen corresponding path program 174 times [2021-06-05 13:12:34,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:34,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752631887] [2021-06-05 13:12:34,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:34,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:34,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752631887] [2021-06-05 13:12:34,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752631887] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:34,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:34,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:34,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943731007] [2021-06-05 13:12:34,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:34,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:34,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:34,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:34,859 INFO L87 Difference]: Start difference. First operand 1522 states and 4433 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:34,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:34,992 INFO L93 Difference]: Finished difference Result 1900 states and 5461 transitions. [2021-06-05 13:12:34,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:34,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:34,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:34,995 INFO L225 Difference]: With dead ends: 1900 [2021-06-05 13:12:34,995 INFO L226 Difference]: Without dead ends: 1636 [2021-06-05 13:12:34,995 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:34,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-06-05 13:12:35,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1508. [2021-06-05 13:12:35,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 1507 states have (on average 2.891838088918381) internal successors, (4358), 1507 states have internal predecessors, (4358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:35,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 4358 transitions. [2021-06-05 13:12:35,012 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 4358 transitions. Word has length 26 [2021-06-05 13:12:35,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:35,012 INFO L482 AbstractCegarLoop]: Abstraction has 1508 states and 4358 transitions. [2021-06-05 13:12:35,012 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:35,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 4358 transitions. [2021-06-05 13:12:35,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:35,014 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:35,014 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:35,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-06-05 13:12:35,014 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:35,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:35,014 INFO L82 PathProgramCache]: Analyzing trace with hash -2044727346, now seen corresponding path program 175 times [2021-06-05 13:12:35,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:35,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273579468] [2021-06-05 13:12:35,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:35,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:35,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:35,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273579468] [2021-06-05 13:12:35,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273579468] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:35,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:35,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:35,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334439817] [2021-06-05 13:12:35,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:35,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:35,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:35,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:35,074 INFO L87 Difference]: Start difference. First operand 1508 states and 4358 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:35,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:35,240 INFO L93 Difference]: Finished difference Result 1766 states and 4965 transitions. [2021-06-05 13:12:35,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:35,240 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:35,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:35,242 INFO L225 Difference]: With dead ends: 1766 [2021-06-05 13:12:35,242 INFO L226 Difference]: Without dead ends: 1508 [2021-06-05 13:12:35,242 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:35,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2021-06-05 13:12:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1438. [2021-06-05 13:12:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1437 states have (on average 2.837160751565762) internal successors, (4077), 1437 states have internal predecessors, (4077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:35,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4077 transitions. [2021-06-05 13:12:35,258 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4077 transitions. Word has length 26 [2021-06-05 13:12:35,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:35,258 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4077 transitions. [2021-06-05 13:12:35,258 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:35,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4077 transitions. [2021-06-05 13:12:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:35,259 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:35,260 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:35,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-06-05 13:12:35,260 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:35,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:35,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1066489600, now seen corresponding path program 176 times [2021-06-05 13:12:35,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:35,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510617094] [2021-06-05 13:12:35,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:35,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:35,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:35,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510617094] [2021-06-05 13:12:35,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510617094] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:35,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:35,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:35,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122794176] [2021-06-05 13:12:35,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:35,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:35,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:35,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:35,327 INFO L87 Difference]: Start difference. First operand 1438 states and 4077 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:35,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:35,500 INFO L93 Difference]: Finished difference Result 1656 states and 4633 transitions. [2021-06-05 13:12:35,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:35,500 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:35,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:35,502 INFO L225 Difference]: With dead ends: 1656 [2021-06-05 13:12:35,502 INFO L226 Difference]: Without dead ends: 1505 [2021-06-05 13:12:35,502 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:35,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-06-05 13:12:35,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1438. [2021-06-05 13:12:35,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1437 states have (on average 2.8288100208768268) internal successors, (4065), 1437 states have internal predecessors, (4065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:35,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4065 transitions. [2021-06-05 13:12:35,518 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4065 transitions. Word has length 26 [2021-06-05 13:12:35,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:35,518 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4065 transitions. [2021-06-05 13:12:35,518 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:35,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4065 transitions. [2021-06-05 13:12:35,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:35,519 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:35,519 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:35,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-06-05 13:12:35,519 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:35,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:35,520 INFO L82 PathProgramCache]: Analyzing trace with hash -479938752, now seen corresponding path program 177 times [2021-06-05 13:12:35,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:35,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473302578] [2021-06-05 13:12:35,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:35,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:35,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:35,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473302578] [2021-06-05 13:12:35,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473302578] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:35,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:35,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:35,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271521484] [2021-06-05 13:12:35,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:35,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:35,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:35,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:35,581 INFO L87 Difference]: Start difference. First operand 1438 states and 4065 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:35,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:35,751 INFO L93 Difference]: Finished difference Result 1661 states and 4643 transitions. [2021-06-05 13:12:35,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:35,752 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:35,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:35,754 INFO L225 Difference]: With dead ends: 1661 [2021-06-05 13:12:35,754 INFO L226 Difference]: Without dead ends: 1541 [2021-06-05 13:12:35,754 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:35,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2021-06-05 13:12:35,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1464. [2021-06-05 13:12:35,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 2.830485304169515) internal successors, (4141), 1463 states have internal predecessors, (4141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:35,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4141 transitions. [2021-06-05 13:12:35,769 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4141 transitions. Word has length 26 [2021-06-05 13:12:35,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:35,769 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 4141 transitions. [2021-06-05 13:12:35,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:35,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4141 transitions. [2021-06-05 13:12:35,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:35,771 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:35,771 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:35,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-06-05 13:12:35,771 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:35,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:35,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1192006594, now seen corresponding path program 178 times [2021-06-05 13:12:35,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:35,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183783822] [2021-06-05 13:12:35,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:35,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:35,847 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:35,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183783822] [2021-06-05 13:12:35,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183783822] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:35,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:35,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:35,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516849879] [2021-06-05 13:12:35,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:35,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:35,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:35,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:35,847 INFO L87 Difference]: Start difference. First operand 1464 states and 4141 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:36,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:36,019 INFO L93 Difference]: Finished difference Result 1719 states and 4756 transitions. [2021-06-05 13:12:36,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:36,019 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:36,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:36,021 INFO L225 Difference]: With dead ends: 1719 [2021-06-05 13:12:36,021 INFO L226 Difference]: Without dead ends: 1599 [2021-06-05 13:12:36,021 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:36,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2021-06-05 13:12:36,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1456. [2021-06-05 13:12:36,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 2.8316151202749142) internal successors, (4120), 1455 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:36,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 4120 transitions. [2021-06-05 13:12:36,037 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 4120 transitions. Word has length 26 [2021-06-05 13:12:36,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:36,037 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 4120 transitions. [2021-06-05 13:12:36,037 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:36,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 4120 transitions. [2021-06-05 13:12:36,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:36,038 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:36,039 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:36,039 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-06-05 13:12:36,039 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:36,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:36,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1037569076, now seen corresponding path program 179 times [2021-06-05 13:12:36,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:36,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212886460] [2021-06-05 13:12:36,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:36,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:36,115 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:36,115 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212886460] [2021-06-05 13:12:36,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212886460] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:36,115 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:36,115 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:36,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536042975] [2021-06-05 13:12:36,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:36,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:36,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:36,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:36,116 INFO L87 Difference]: Start difference. First operand 1456 states and 4120 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:36,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:36,309 INFO L93 Difference]: Finished difference Result 1748 states and 4846 transitions. [2021-06-05 13:12:36,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:36,310 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:36,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:36,312 INFO L225 Difference]: With dead ends: 1748 [2021-06-05 13:12:36,312 INFO L226 Difference]: Without dead ends: 1524 [2021-06-05 13:12:36,313 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:36,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-06-05 13:12:36,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1396. [2021-06-05 13:12:36,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1395 states have (on average 2.8315412186379927) internal successors, (3950), 1395 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:36,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3950 transitions. [2021-06-05 13:12:36,334 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3950 transitions. Word has length 26 [2021-06-05 13:12:36,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:36,334 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 3950 transitions. [2021-06-05 13:12:36,334 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:36,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3950 transitions. [2021-06-05 13:12:36,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:36,336 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:36,336 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:36,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-06-05 13:12:36,336 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:36,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:36,336 INFO L82 PathProgramCache]: Analyzing trace with hash 538943446, now seen corresponding path program 180 times [2021-06-05 13:12:36,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:36,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056694680] [2021-06-05 13:12:36,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:36,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:36,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:36,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056694680] [2021-06-05 13:12:36,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056694680] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:36,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:36,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:36,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608193833] [2021-06-05 13:12:36,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:36,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:36,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:36,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:36,394 INFO L87 Difference]: Start difference. First operand 1396 states and 3950 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:36,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:36,531 INFO L93 Difference]: Finished difference Result 1674 states and 4682 transitions. [2021-06-05 13:12:36,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:36,532 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:36,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:36,534 INFO L225 Difference]: With dead ends: 1674 [2021-06-05 13:12:36,534 INFO L226 Difference]: Without dead ends: 1589 [2021-06-05 13:12:36,534 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:36,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2021-06-05 13:12:36,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1426. [2021-06-05 13:12:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 2.829473684210526) internal successors, (4032), 1425 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4032 transitions. [2021-06-05 13:12:36,549 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4032 transitions. Word has length 26 [2021-06-05 13:12:36,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:36,549 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 4032 transitions. [2021-06-05 13:12:36,549 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:36,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4032 transitions. [2021-06-05 13:12:36,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:36,550 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:36,550 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:36,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-06-05 13:12:36,550 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:36,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:36,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1408388054, now seen corresponding path program 181 times [2021-06-05 13:12:36,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:36,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105394166] [2021-06-05 13:12:36,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:36,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:36,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:36,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105394166] [2021-06-05 13:12:36,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105394166] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:36,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:36,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:36,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218523156] [2021-06-05 13:12:36,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:36,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:36,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:36,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:36,612 INFO L87 Difference]: Start difference. First operand 1426 states and 4032 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:36,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:36,783 INFO L93 Difference]: Finished difference Result 1703 states and 4751 transitions. [2021-06-05 13:12:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:36,783 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:36,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:36,785 INFO L225 Difference]: With dead ends: 1703 [2021-06-05 13:12:36,785 INFO L226 Difference]: Without dead ends: 1516 [2021-06-05 13:12:36,785 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:36,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-06-05 13:12:36,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1388. [2021-06-05 13:12:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 2.8197548666186014) internal successors, (3911), 1387 states have internal predecessors, (3911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 3911 transitions. [2021-06-05 13:12:36,800 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 3911 transitions. Word has length 26 [2021-06-05 13:12:36,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:36,800 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 3911 transitions. [2021-06-05 13:12:36,800 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:36,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 3911 transitions. [2021-06-05 13:12:36,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:36,802 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:36,802 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:36,802 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-06-05 13:12:36,802 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:36,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:36,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1178797324, now seen corresponding path program 182 times [2021-06-05 13:12:36,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:36,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738691250] [2021-06-05 13:12:36,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:36,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:36,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738691250] [2021-06-05 13:12:36,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738691250] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:36,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:36,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:36,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263949345] [2021-06-05 13:12:36,869 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:36,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:36,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:36,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:36,869 INFO L87 Difference]: Start difference. First operand 1388 states and 3911 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:37,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:37,042 INFO L93 Difference]: Finished difference Result 1583 states and 4394 transitions. [2021-06-05 13:12:37,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:37,042 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:37,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:37,044 INFO L225 Difference]: With dead ends: 1583 [2021-06-05 13:12:37,044 INFO L226 Difference]: Without dead ends: 1498 [2021-06-05 13:12:37,044 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:37,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-06-05 13:12:37,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1378. [2021-06-05 13:12:37,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1377 states have (on average 2.8249818445896877) internal successors, (3890), 1377 states have internal predecessors, (3890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:37,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 3890 transitions. [2021-06-05 13:12:37,060 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 3890 transitions. Word has length 26 [2021-06-05 13:12:37,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:37,060 INFO L482 AbstractCegarLoop]: Abstraction has 1378 states and 3890 transitions. [2021-06-05 13:12:37,060 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:37,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 3890 transitions. [2021-06-05 13:12:37,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:37,061 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:37,061 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:37,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-06-05 13:12:37,061 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:37,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:37,062 INFO L82 PathProgramCache]: Analyzing trace with hash -309352716, now seen corresponding path program 183 times [2021-06-05 13:12:37,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:37,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780815888] [2021-06-05 13:12:37,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:37,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:37,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780815888] [2021-06-05 13:12:37,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780815888] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:37,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:37,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:37,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082812324] [2021-06-05 13:12:37,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:37,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:37,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:37,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:37,124 INFO L87 Difference]: Start difference. First operand 1378 states and 3890 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:37,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:37,303 INFO L93 Difference]: Finished difference Result 1537 states and 4286 transitions. [2021-06-05 13:12:37,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:37,304 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:37,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:37,305 INFO L225 Difference]: With dead ends: 1537 [2021-06-05 13:12:37,305 INFO L226 Difference]: Without dead ends: 1442 [2021-06-05 13:12:37,305 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:37,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2021-06-05 13:12:37,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1390. [2021-06-05 13:12:37,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 2.8192944564434845) internal successors, (3916), 1389 states have internal predecessors, (3916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:37,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 3916 transitions. [2021-06-05 13:12:37,320 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 3916 transitions. Word has length 26 [2021-06-05 13:12:37,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:37,321 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 3916 transitions. [2021-06-05 13:12:37,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:37,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 3916 transitions. [2021-06-05 13:12:37,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:37,322 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:37,322 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:37,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-06-05 13:12:37,322 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:37,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:37,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1943506074, now seen corresponding path program 184 times [2021-06-05 13:12:37,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:37,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707836109] [2021-06-05 13:12:37,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:37,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:37,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:37,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707836109] [2021-06-05 13:12:37,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707836109] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:37,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:37,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:37,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489929551] [2021-06-05 13:12:37,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:37,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:37,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:37,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:37,375 INFO L87 Difference]: Start difference. First operand 1390 states and 3916 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:37,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:37,522 INFO L93 Difference]: Finished difference Result 1645 states and 4600 transitions. [2021-06-05 13:12:37,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:37,523 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:37,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:37,525 INFO L225 Difference]: With dead ends: 1645 [2021-06-05 13:12:37,525 INFO L226 Difference]: Without dead ends: 1562 [2021-06-05 13:12:37,525 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:37,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-06-05 13:12:37,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1396. [2021-06-05 13:12:37,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1395 states have (on average 2.813620071684588) internal successors, (3925), 1395 states have internal predecessors, (3925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:37,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3925 transitions. [2021-06-05 13:12:37,540 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3925 transitions. Word has length 26 [2021-06-05 13:12:37,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:37,540 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 3925 transitions. [2021-06-05 13:12:37,540 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:37,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3925 transitions. [2021-06-05 13:12:37,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:37,541 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:37,541 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:37,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-06-05 13:12:37,541 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:37,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:37,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1764910374, now seen corresponding path program 185 times [2021-06-05 13:12:37,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:37,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004983443] [2021-06-05 13:12:37,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:37,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:37,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004983443] [2021-06-05 13:12:37,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004983443] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:37,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:37,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:37,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555242951] [2021-06-05 13:12:37,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:37,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:37,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:37,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:37,602 INFO L87 Difference]: Start difference. First operand 1396 states and 3925 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:37,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:37,777 INFO L93 Difference]: Finished difference Result 1543 states and 4300 transitions. [2021-06-05 13:12:37,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:37,778 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:37,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:37,780 INFO L225 Difference]: With dead ends: 1543 [2021-06-05 13:12:37,780 INFO L226 Difference]: Without dead ends: 1455 [2021-06-05 13:12:37,780 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:37,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-06-05 13:12:37,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1392. [2021-06-05 13:12:37,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 2.8173975557153126) internal successors, (3919), 1391 states have internal predecessors, (3919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:37,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 3919 transitions. [2021-06-05 13:12:37,794 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 3919 transitions. Word has length 26 [2021-06-05 13:12:37,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:37,794 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 3919 transitions. [2021-06-05 13:12:37,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:37,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 3919 transitions. [2021-06-05 13:12:37,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:37,796 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:37,796 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:37,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-06-05 13:12:37,796 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:37,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:37,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1817989080, now seen corresponding path program 186 times [2021-06-05 13:12:37,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:37,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721887761] [2021-06-05 13:12:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:37,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:37,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721887761] [2021-06-05 13:12:37,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721887761] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:37,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:37,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:37,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010590177] [2021-06-05 13:12:37,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:37,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:37,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:37,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:37,857 INFO L87 Difference]: Start difference. First operand 1392 states and 3919 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:38,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:38,034 INFO L93 Difference]: Finished difference Result 1684 states and 4690 transitions. [2021-06-05 13:12:38,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:38,035 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:38,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:38,037 INFO L225 Difference]: With dead ends: 1684 [2021-06-05 13:12:38,037 INFO L226 Difference]: Without dead ends: 1596 [2021-06-05 13:12:38,037 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:38,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2021-06-05 13:12:38,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1416. [2021-06-05 13:12:38,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 2.8197879858657244) internal successors, (3990), 1415 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:38,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 3990 transitions. [2021-06-05 13:12:38,052 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 3990 transitions. Word has length 26 [2021-06-05 13:12:38,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:38,052 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 3990 transitions. [2021-06-05 13:12:38,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:38,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 3990 transitions. [2021-06-05 13:12:38,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:38,054 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:38,054 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:38,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-06-05 13:12:38,054 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:38,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:38,054 INFO L82 PathProgramCache]: Analyzing trace with hash 854757070, now seen corresponding path program 187 times [2021-06-05 13:12:38,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:38,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747071842] [2021-06-05 13:12:38,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:38,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:38,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747071842] [2021-06-05 13:12:38,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747071842] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:38,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:38,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:38,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642946655] [2021-06-05 13:12:38,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:38,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:38,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:38,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:38,118 INFO L87 Difference]: Start difference. First operand 1416 states and 3990 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:38,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:38,267 INFO L93 Difference]: Finished difference Result 1704 states and 4749 transitions. [2021-06-05 13:12:38,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:38,267 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:38,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:38,269 INFO L225 Difference]: With dead ends: 1704 [2021-06-05 13:12:38,269 INFO L226 Difference]: Without dead ends: 1544 [2021-06-05 13:12:38,269 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:38,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-06-05 13:12:38,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1404. [2021-06-05 13:12:38,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 2.819672131147541) internal successors, (3956), 1403 states have internal predecessors, (3956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:38,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 3956 transitions. [2021-06-05 13:12:38,284 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 3956 transitions. Word has length 26 [2021-06-05 13:12:38,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:38,284 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 3956 transitions. [2021-06-05 13:12:38,284 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:38,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 3956 transitions. [2021-06-05 13:12:38,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:38,285 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:38,285 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:38,285 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-06-05 13:12:38,285 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:38,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:38,286 INFO L82 PathProgramCache]: Analyzing trace with hash -724674576, now seen corresponding path program 188 times [2021-06-05 13:12:38,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:38,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168649742] [2021-06-05 13:12:38,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:38,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:38,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168649742] [2021-06-05 13:12:38,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168649742] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:38,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:38,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:38,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466200117] [2021-06-05 13:12:38,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:38,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:38,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:38,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:38,346 INFO L87 Difference]: Start difference. First operand 1404 states and 3956 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:38,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:38,519 INFO L93 Difference]: Finished difference Result 1611 states and 4453 transitions. [2021-06-05 13:12:38,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:38,519 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:38,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:38,521 INFO L225 Difference]: With dead ends: 1611 [2021-06-05 13:12:38,521 INFO L226 Difference]: Without dead ends: 1492 [2021-06-05 13:12:38,521 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:38,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-06-05 13:12:38,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1394. [2021-06-05 13:12:38,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 2.8241206030150754) internal successors, (3934), 1393 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:38,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 3934 transitions. [2021-06-05 13:12:38,536 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 3934 transitions. Word has length 26 [2021-06-05 13:12:38,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:38,536 INFO L482 AbstractCegarLoop]: Abstraction has 1394 states and 3934 transitions. [2021-06-05 13:12:38,536 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:38,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 3934 transitions. [2021-06-05 13:12:38,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:38,537 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:38,537 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:38,537 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-06-05 13:12:38,537 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:38,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:38,538 INFO L82 PathProgramCache]: Analyzing trace with hash -903833710, now seen corresponding path program 189 times [2021-06-05 13:12:38,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:38,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151174272] [2021-06-05 13:12:38,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:38,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:38,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151174272] [2021-06-05 13:12:38,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151174272] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:38,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:38,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:38,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188036892] [2021-06-05 13:12:38,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:38,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:38,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:38,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:38,599 INFO L87 Difference]: Start difference. First operand 1394 states and 3934 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:38,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:38,776 INFO L93 Difference]: Finished difference Result 1557 states and 4341 transitions. [2021-06-05 13:12:38,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:38,776 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:38,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:38,778 INFO L225 Difference]: With dead ends: 1557 [2021-06-05 13:12:38,778 INFO L226 Difference]: Without dead ends: 1472 [2021-06-05 13:12:38,778 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:38,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-06-05 13:12:38,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1396. [2021-06-05 13:12:38,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1395 states have (on average 2.825806451612903) internal successors, (3942), 1395 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:38,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3942 transitions. [2021-06-05 13:12:38,793 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3942 transitions. Word has length 26 [2021-06-05 13:12:38,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:38,793 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 3942 transitions. [2021-06-05 13:12:38,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:38,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3942 transitions. [2021-06-05 13:12:38,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:38,794 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:38,794 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:38,795 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-06-05 13:12:38,795 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:38,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:38,795 INFO L82 PathProgramCache]: Analyzing trace with hash -34389102, now seen corresponding path program 190 times [2021-06-05 13:12:38,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:38,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369049242] [2021-06-05 13:12:38,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:38,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:38,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:38,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369049242] [2021-06-05 13:12:38,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369049242] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:38,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:38,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:38,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113175206] [2021-06-05 13:12:38,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:38,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:38,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:38,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:38,866 INFO L87 Difference]: Start difference. First operand 1396 states and 3942 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:39,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:39,052 INFO L93 Difference]: Finished difference Result 1544 states and 4317 transitions. [2021-06-05 13:12:39,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:39,052 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:39,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:39,054 INFO L225 Difference]: With dead ends: 1544 [2021-06-05 13:12:39,054 INFO L226 Difference]: Without dead ends: 1449 [2021-06-05 13:12:39,054 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:39,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2021-06-05 13:12:39,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1400. [2021-06-05 13:12:39,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 2.827019299499643) internal successors, (3955), 1399 states have internal predecessors, (3955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:39,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3955 transitions. [2021-06-05 13:12:39,069 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3955 transitions. Word has length 26 [2021-06-05 13:12:39,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:39,069 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3955 transitions. [2021-06-05 13:12:39,069 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:39,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3955 transitions. [2021-06-05 13:12:39,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:39,071 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:39,071 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:39,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-06-05 13:12:39,071 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:39,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:39,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1503100332, now seen corresponding path program 191 times [2021-06-05 13:12:39,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:39,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023774262] [2021-06-05 13:12:39,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:39,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:39,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:39,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023774262] [2021-06-05 13:12:39,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023774262] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:39,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:39,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:39,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887501340] [2021-06-05 13:12:39,135 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:39,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:39,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:39,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:39,135 INFO L87 Difference]: Start difference. First operand 1400 states and 3955 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:39,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:39,310 INFO L93 Difference]: Finished difference Result 1551 states and 4333 transitions. [2021-06-05 13:12:39,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:39,311 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:39,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:39,312 INFO L225 Difference]: With dead ends: 1551 [2021-06-05 13:12:39,312 INFO L226 Difference]: Without dead ends: 1466 [2021-06-05 13:12:39,313 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:39,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-06-05 13:12:39,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1398. [2021-06-05 13:12:39,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1397 states have (on average 2.82605583392985) internal successors, (3948), 1397 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:39,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 3948 transitions. [2021-06-05 13:12:39,327 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 3948 transitions. Word has length 26 [2021-06-05 13:12:39,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:39,327 INFO L482 AbstractCegarLoop]: Abstraction has 1398 states and 3948 transitions. [2021-06-05 13:12:39,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:39,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 3948 transitions. [2021-06-05 13:12:39,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:39,329 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:39,329 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:39,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-06-05 13:12:39,329 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:39,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:39,329 INFO L82 PathProgramCache]: Analyzing trace with hash -2076497608, now seen corresponding path program 192 times [2021-06-05 13:12:39,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:39,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649554562] [2021-06-05 13:12:39,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:39,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:39,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649554562] [2021-06-05 13:12:39,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649554562] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:39,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:39,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:39,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960938692] [2021-06-05 13:12:39,393 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:39,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:39,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:39,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:39,393 INFO L87 Difference]: Start difference. First operand 1398 states and 3948 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:39,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:39,576 INFO L93 Difference]: Finished difference Result 1561 states and 4348 transitions. [2021-06-05 13:12:39,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:39,576 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:39,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:39,578 INFO L225 Difference]: With dead ends: 1561 [2021-06-05 13:12:39,578 INFO L226 Difference]: Without dead ends: 1478 [2021-06-05 13:12:39,578 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:39,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2021-06-05 13:12:39,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1398. [2021-06-05 13:12:39,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1397 states have (on average 2.8246241947029347) internal successors, (3946), 1397 states have internal predecessors, (3946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:39,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 3946 transitions. [2021-06-05 13:12:39,593 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 3946 transitions. Word has length 26 [2021-06-05 13:12:39,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:39,593 INFO L482 AbstractCegarLoop]: Abstraction has 1398 states and 3946 transitions. [2021-06-05 13:12:39,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:39,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 3946 transitions. [2021-06-05 13:12:39,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:39,594 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:39,594 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:39,594 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-06-05 13:12:39,595 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:39,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:39,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1489946760, now seen corresponding path program 193 times [2021-06-05 13:12:39,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:39,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494125261] [2021-06-05 13:12:39,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:39,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:39,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:39,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494125261] [2021-06-05 13:12:39,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494125261] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:39,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:39,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:39,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186459494] [2021-06-05 13:12:39,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:39,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:39,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:39,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:39,658 INFO L87 Difference]: Start difference. First operand 1398 states and 3946 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:39,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:39,837 INFO L93 Difference]: Finished difference Result 1541 states and 4312 transitions. [2021-06-05 13:12:39,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:39,838 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:39,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:39,840 INFO L225 Difference]: With dead ends: 1541 [2021-06-05 13:12:39,840 INFO L226 Difference]: Without dead ends: 1453 [2021-06-05 13:12:39,840 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:39,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-05 13:12:39,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1399. [2021-06-05 13:12:39,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 2.8254649499284694) internal successors, (3950), 1398 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:39,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 3950 transitions. [2021-06-05 13:12:39,854 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 3950 transitions. Word has length 26 [2021-06-05 13:12:39,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:39,854 INFO L482 AbstractCegarLoop]: Abstraction has 1399 states and 3950 transitions. [2021-06-05 13:12:39,854 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:39,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 3950 transitions. [2021-06-05 13:12:39,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:39,856 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:39,856 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:39,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-06-05 13:12:39,856 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:39,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:39,856 INFO L82 PathProgramCache]: Analyzing trace with hash 2092952694, now seen corresponding path program 194 times [2021-06-05 13:12:39,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:39,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917357359] [2021-06-05 13:12:39,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:39,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:39,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917357359] [2021-06-05 13:12:39,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917357359] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:39,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:39,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:39,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444701235] [2021-06-05 13:12:39,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:39,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:39,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:39,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:39,917 INFO L87 Difference]: Start difference. First operand 1399 states and 3950 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:40,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:40,098 INFO L93 Difference]: Finished difference Result 1549 states and 4315 transitions. [2021-06-05 13:12:40,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:40,099 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:40,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:40,100 INFO L225 Difference]: With dead ends: 1549 [2021-06-05 13:12:40,101 INFO L226 Difference]: Without dead ends: 1461 [2021-06-05 13:12:40,101 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:40,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-06-05 13:12:40,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1400. [2021-06-05 13:12:40,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 2.827019299499643) internal successors, (3955), 1399 states have internal predecessors, (3955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:40,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3955 transitions. [2021-06-05 13:12:40,115 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3955 transitions. Word has length 26 [2021-06-05 13:12:40,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:40,115 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3955 transitions. [2021-06-05 13:12:40,115 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:40,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3955 transitions. [2021-06-05 13:12:40,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:40,116 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:40,116 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:40,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-06-05 13:12:40,117 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:40,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:40,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1110641676, now seen corresponding path program 195 times [2021-06-05 13:12:40,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:40,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471730085] [2021-06-05 13:12:40,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:40,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:40,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471730085] [2021-06-05 13:12:40,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471730085] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:40,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:40,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:40,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315077253] [2021-06-05 13:12:40,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:40,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:40,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:40,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:40,195 INFO L87 Difference]: Start difference. First operand 1400 states and 3955 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:40,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:40,368 INFO L93 Difference]: Finished difference Result 1607 states and 4488 transitions. [2021-06-05 13:12:40,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:40,369 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:40,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:40,371 INFO L225 Difference]: With dead ends: 1607 [2021-06-05 13:12:40,371 INFO L226 Difference]: Without dead ends: 1522 [2021-06-05 13:12:40,371 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:40,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-06-05 13:12:40,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1400. [2021-06-05 13:12:40,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 2.827019299499643) internal successors, (3955), 1399 states have internal predecessors, (3955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:40,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3955 transitions. [2021-06-05 13:12:40,385 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3955 transitions. Word has length 26 [2021-06-05 13:12:40,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:40,385 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3955 transitions. [2021-06-05 13:12:40,385 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:40,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3955 transitions. [2021-06-05 13:12:40,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:40,387 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:40,387 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:40,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-06-05 13:12:40,387 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:40,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:40,387 INFO L82 PathProgramCache]: Analyzing trace with hash -241197068, now seen corresponding path program 196 times [2021-06-05 13:12:40,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:40,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799349484] [2021-06-05 13:12:40,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:40,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:40,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799349484] [2021-06-05 13:12:40,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799349484] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:40,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:40,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:40,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092409468] [2021-06-05 13:12:40,449 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:40,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:40,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:40,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:40,449 INFO L87 Difference]: Start difference. First operand 1400 states and 3955 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:40,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:40,624 INFO L93 Difference]: Finished difference Result 1617 states and 4532 transitions. [2021-06-05 13:12:40,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:40,624 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:40,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:40,626 INFO L225 Difference]: With dead ends: 1617 [2021-06-05 13:12:40,626 INFO L226 Difference]: Without dead ends: 1522 [2021-06-05 13:12:40,626 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:40,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-06-05 13:12:40,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1407. [2021-06-05 13:12:40,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1406 states have (on average 2.8250355618776672) internal successors, (3972), 1406 states have internal predecessors, (3972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:40,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 3972 transitions. [2021-06-05 13:12:40,647 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 3972 transitions. Word has length 26 [2021-06-05 13:12:40,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:40,647 INFO L482 AbstractCegarLoop]: Abstraction has 1407 states and 3972 transitions. [2021-06-05 13:12:40,647 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:40,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 3972 transitions. [2021-06-05 13:12:40,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:40,648 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:40,648 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:40,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-06-05 13:12:40,649 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:40,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:40,649 INFO L82 PathProgramCache]: Analyzing trace with hash -495542802, now seen corresponding path program 197 times [2021-06-05 13:12:40,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:40,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485941948] [2021-06-05 13:12:40,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:40,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:40,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:40,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485941948] [2021-06-05 13:12:40,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485941948] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:40,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:40,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:40,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939574588] [2021-06-05 13:12:40,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:40,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:40,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:40,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:40,716 INFO L87 Difference]: Start difference. First operand 1407 states and 3972 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:40,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:40,888 INFO L93 Difference]: Finished difference Result 1602 states and 4492 transitions. [2021-06-05 13:12:40,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:40,888 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:40,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:40,890 INFO L225 Difference]: With dead ends: 1602 [2021-06-05 13:12:40,890 INFO L226 Difference]: Without dead ends: 1502 [2021-06-05 13:12:40,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:40,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-06-05 13:12:40,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1405. [2021-06-05 13:12:40,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1404 states have (on average 2.826923076923077) internal successors, (3969), 1404 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:40,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 3969 transitions. [2021-06-05 13:12:40,905 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 3969 transitions. Word has length 26 [2021-06-05 13:12:40,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:40,905 INFO L482 AbstractCegarLoop]: Abstraction has 1405 states and 3969 transitions. [2021-06-05 13:12:40,905 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:40,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 3969 transitions. [2021-06-05 13:12:40,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:40,906 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:40,906 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:40,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-06-05 13:12:40,906 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:40,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:40,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1813146598, now seen corresponding path program 198 times [2021-06-05 13:12:40,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:40,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146440585] [2021-06-05 13:12:40,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:40,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:40,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146440585] [2021-06-05 13:12:40,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146440585] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:40,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:40,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:40,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75273038] [2021-06-05 13:12:40,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:40,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:40,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:40,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:40,963 INFO L87 Difference]: Start difference. First operand 1405 states and 3969 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:41,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:41,102 INFO L93 Difference]: Finished difference Result 1611 states and 4507 transitions. [2021-06-05 13:12:41,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:41,102 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:41,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:41,104 INFO L225 Difference]: With dead ends: 1611 [2021-06-05 13:12:41,104 INFO L226 Difference]: Without dead ends: 1524 [2021-06-05 13:12:41,104 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:41,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-06-05 13:12:41,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1406. [2021-06-05 13:12:41,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 2.8270462633451956) internal successors, (3972), 1405 states have internal predecessors, (3972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:41,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 3972 transitions. [2021-06-05 13:12:41,119 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 3972 transitions. Word has length 26 [2021-06-05 13:12:41,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:41,119 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 3972 transitions. [2021-06-05 13:12:41,119 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:41,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 3972 transitions. [2021-06-05 13:12:41,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:41,120 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:41,121 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:41,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-06-05 13:12:41,121 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:41,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:41,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1741697498, now seen corresponding path program 199 times [2021-06-05 13:12:41,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:41,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263071700] [2021-06-05 13:12:41,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:41,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:41,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:41,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263071700] [2021-06-05 13:12:41,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263071700] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:41,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:41,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:41,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206492880] [2021-06-05 13:12:41,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:41,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:41,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:41,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:41,196 INFO L87 Difference]: Start difference. First operand 1406 states and 3972 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:41,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:41,371 INFO L93 Difference]: Finished difference Result 1550 states and 4346 transitions. [2021-06-05 13:12:41,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:41,372 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:41,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:41,374 INFO L225 Difference]: With dead ends: 1550 [2021-06-05 13:12:41,374 INFO L226 Difference]: Without dead ends: 1462 [2021-06-05 13:12:41,374 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:41,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-06-05 13:12:41,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1408. [2021-06-05 13:12:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1407 states have (on average 2.8280028429282162) internal successors, (3979), 1407 states have internal predecessors, (3979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:41,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 3979 transitions. [2021-06-05 13:12:41,395 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 3979 transitions. Word has length 26 [2021-06-05 13:12:41,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:41,395 INFO L482 AbstractCegarLoop]: Abstraction has 1408 states and 3979 transitions. [2021-06-05 13:12:41,395 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:41,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 3979 transitions. [2021-06-05 13:12:41,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:41,397 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:41,397 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:41,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-06-05 13:12:41,397 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:41,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:41,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1029629656, now seen corresponding path program 200 times [2021-06-05 13:12:41,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:41,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325097451] [2021-06-05 13:12:41,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:41,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:41,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325097451] [2021-06-05 13:12:41,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325097451] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:41,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:41,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:41,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112833520] [2021-06-05 13:12:41,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:41,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:41,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:41,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:41,468 INFO L87 Difference]: Start difference. First operand 1408 states and 3979 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:41,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:41,646 INFO L93 Difference]: Finished difference Result 1554 states and 4338 transitions. [2021-06-05 13:12:41,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:41,647 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:41,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:41,649 INFO L225 Difference]: With dead ends: 1554 [2021-06-05 13:12:41,649 INFO L226 Difference]: Without dead ends: 1468 [2021-06-05 13:12:41,649 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:41,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2021-06-05 13:12:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1407. [2021-06-05 13:12:41,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1406 states have (on average 2.8250355618776672) internal successors, (3972), 1406 states have internal predecessors, (3972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:41,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 3972 transitions. [2021-06-05 13:12:41,664 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 3972 transitions. Word has length 26 [2021-06-05 13:12:41,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:41,664 INFO L482 AbstractCegarLoop]: Abstraction has 1407 states and 3972 transitions. [2021-06-05 13:12:41,664 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:41,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 3972 transitions. [2021-06-05 13:12:41,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:41,665 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:41,665 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:41,666 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-06-05 13:12:41,666 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:41,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:41,666 INFO L82 PathProgramCache]: Analyzing trace with hash 349552952, now seen corresponding path program 201 times [2021-06-05 13:12:41,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:41,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183202781] [2021-06-05 13:12:41,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:41,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:41,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183202781] [2021-06-05 13:12:41,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183202781] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:41,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:41,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:41,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953914458] [2021-06-05 13:12:41,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:41,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:41,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:41,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:41,727 INFO L87 Difference]: Start difference. First operand 1407 states and 3972 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:41,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:41,902 INFO L93 Difference]: Finished difference Result 1620 states and 4536 transitions. [2021-06-05 13:12:41,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:41,903 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:41,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:41,905 INFO L225 Difference]: With dead ends: 1620 [2021-06-05 13:12:41,905 INFO L226 Difference]: Without dead ends: 1523 [2021-06-05 13:12:41,905 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:41,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-06-05 13:12:41,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1419. [2021-06-05 13:12:41,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1418 states have (on average 2.821579689703808) internal successors, (4001), 1418 states have internal predecessors, (4001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 4001 transitions. [2021-06-05 13:12:41,919 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 4001 transitions. Word has length 26 [2021-06-05 13:12:41,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:41,919 INFO L482 AbstractCegarLoop]: Abstraction has 1419 states and 4001 transitions. [2021-06-05 13:12:41,919 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:41,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 4001 transitions. [2021-06-05 13:12:41,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:41,921 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:41,921 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:41,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-06-05 13:12:41,921 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:41,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:41,921 INFO L82 PathProgramCache]: Analyzing trace with hash 939870006, now seen corresponding path program 202 times [2021-06-05 13:12:41,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:41,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966615890] [2021-06-05 13:12:41,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:41,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:41,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:41,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966615890] [2021-06-05 13:12:41,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966615890] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:41,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:41,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:41,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223553293] [2021-06-05 13:12:41,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:41,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:41,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:41,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:41,983 INFO L87 Difference]: Start difference. First operand 1419 states and 4001 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:42,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:42,159 INFO L93 Difference]: Finished difference Result 1652 states and 4605 transitions. [2021-06-05 13:12:42,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:42,159 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:42,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:42,161 INFO L225 Difference]: With dead ends: 1652 [2021-06-05 13:12:42,161 INFO L226 Difference]: Without dead ends: 1563 [2021-06-05 13:12:42,161 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:42,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2021-06-05 13:12:42,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1418. [2021-06-05 13:12:42,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1417 states have (on average 2.8228652081863093) internal successors, (4000), 1417 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:42,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 4000 transitions. [2021-06-05 13:12:42,176 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 4000 transitions. Word has length 26 [2021-06-05 13:12:42,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:42,176 INFO L482 AbstractCegarLoop]: Abstraction has 1418 states and 4000 transitions. [2021-06-05 13:12:42,177 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:42,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 4000 transitions. [2021-06-05 13:12:42,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:42,178 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:42,178 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:42,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-06-05 13:12:42,178 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:42,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:42,178 INFO L82 PathProgramCache]: Analyzing trace with hash -2043486036, now seen corresponding path program 203 times [2021-06-05 13:12:42,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:42,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586364569] [2021-06-05 13:12:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:42,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:42,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:42,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586364569] [2021-06-05 13:12:42,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586364569] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:42,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:42,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:42,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211188426] [2021-06-05 13:12:42,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:42,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:42,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:42,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:42,244 INFO L87 Difference]: Start difference. First operand 1418 states and 4000 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:42,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:42,381 INFO L93 Difference]: Finished difference Result 1692 states and 4710 transitions. [2021-06-05 13:12:42,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:42,382 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:42,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:42,383 INFO L225 Difference]: With dead ends: 1692 [2021-06-05 13:12:42,383 INFO L226 Difference]: Without dead ends: 1504 [2021-06-05 13:12:42,383 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:42,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2021-06-05 13:12:42,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1400. [2021-06-05 13:12:42,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 2.802001429592566) internal successors, (3920), 1399 states have internal predecessors, (3920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:42,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3920 transitions. [2021-06-05 13:12:42,398 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3920 transitions. Word has length 26 [2021-06-05 13:12:42,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:42,398 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3920 transitions. [2021-06-05 13:12:42,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:42,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3920 transitions. [2021-06-05 13:12:42,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:42,400 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:42,400 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:42,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-06-05 13:12:42,400 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:42,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:42,400 INFO L82 PathProgramCache]: Analyzing trace with hash 672049614, now seen corresponding path program 204 times [2021-06-05 13:12:42,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:42,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614126236] [2021-06-05 13:12:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:42,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:42,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614126236] [2021-06-05 13:12:42,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614126236] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:42,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:42,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:42,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666506407] [2021-06-05 13:12:42,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:42,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:42,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:42,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:42,460 INFO L87 Difference]: Start difference. First operand 1400 states and 3920 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:42,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:42,632 INFO L93 Difference]: Finished difference Result 1597 states and 4423 transitions. [2021-06-05 13:12:42,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:42,633 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:42,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:42,634 INFO L225 Difference]: With dead ends: 1597 [2021-06-05 13:12:42,634 INFO L226 Difference]: Without dead ends: 1470 [2021-06-05 13:12:42,635 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:42,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-06-05 13:12:42,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1368. [2021-06-05 13:12:42,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1367 states have (on average 2.8083394294074617) internal successors, (3839), 1367 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:42,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 3839 transitions. [2021-06-05 13:12:42,649 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 3839 transitions. Word has length 26 [2021-06-05 13:12:42,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:42,649 INFO L482 AbstractCegarLoop]: Abstraction has 1368 states and 3839 transitions. [2021-06-05 13:12:42,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:42,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 3839 transitions. [2021-06-05 13:12:42,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:42,650 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:42,650 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:42,650 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-06-05 13:12:42,650 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:42,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:42,650 INFO L82 PathProgramCache]: Analyzing trace with hash 680919408, now seen corresponding path program 205 times [2021-06-05 13:12:42,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:42,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755366672] [2021-06-05 13:12:42,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:42,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:42,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:42,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755366672] [2021-06-05 13:12:42,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755366672] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:42,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:42,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:42,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652222239] [2021-06-05 13:12:42,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:42,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:42,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:42,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:42,711 INFO L87 Difference]: Start difference. First operand 1368 states and 3839 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:42,885 INFO L93 Difference]: Finished difference Result 1512 states and 4214 transitions. [2021-06-05 13:12:42,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:42,885 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:42,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:42,887 INFO L225 Difference]: With dead ends: 1512 [2021-06-05 13:12:42,887 INFO L226 Difference]: Without dead ends: 1424 [2021-06-05 13:12:42,887 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:42,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2021-06-05 13:12:42,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1371. [2021-06-05 13:12:42,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 1370 states have (on average 2.808029197080292) internal successors, (3847), 1370 states have internal predecessors, (3847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:42,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 3847 transitions. [2021-06-05 13:12:42,901 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 3847 transitions. Word has length 26 [2021-06-05 13:12:42,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:42,901 INFO L482 AbstractCegarLoop]: Abstraction has 1371 states and 3847 transitions. [2021-06-05 13:12:42,901 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:42,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 3847 transitions. [2021-06-05 13:12:42,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:42,902 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:42,902 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:42,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-06-05 13:12:42,902 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:42,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:42,903 INFO L82 PathProgramCache]: Analyzing trace with hash -31148434, now seen corresponding path program 206 times [2021-06-05 13:12:42,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:42,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062953830] [2021-06-05 13:12:42,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:42,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:42,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062953830] [2021-06-05 13:12:42,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062953830] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:42,963 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:42,963 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:42,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313568711] [2021-06-05 13:12:42,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:42,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:42,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:42,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:42,963 INFO L87 Difference]: Start difference. First operand 1371 states and 3847 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:43,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:43,133 INFO L93 Difference]: Finished difference Result 1563 states and 4321 transitions. [2021-06-05 13:12:43,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:43,133 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:43,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:43,135 INFO L225 Difference]: With dead ends: 1563 [2021-06-05 13:12:43,135 INFO L226 Difference]: Without dead ends: 1477 [2021-06-05 13:12:43,135 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:43,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2021-06-05 13:12:43,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1369. [2021-06-05 13:12:43,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1368 states have (on average 2.806286549707602) internal successors, (3839), 1368 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 3839 transitions. [2021-06-05 13:12:43,150 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 3839 transitions. Word has length 26 [2021-06-05 13:12:43,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:43,150 INFO L482 AbstractCegarLoop]: Abstraction has 1369 states and 3839 transitions. [2021-06-05 13:12:43,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:43,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 3839 transitions. [2021-06-05 13:12:43,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:43,151 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:43,151 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:43,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-06-05 13:12:43,151 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:43,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:43,152 INFO L82 PathProgramCache]: Analyzing trace with hash -711225138, now seen corresponding path program 207 times [2021-06-05 13:12:43,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:43,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980253950] [2021-06-05 13:12:43,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:43,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:43,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:43,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980253950] [2021-06-05 13:12:43,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980253950] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:43,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:43,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:43,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566111300] [2021-06-05 13:12:43,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:43,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:43,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:43,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:43,217 INFO L87 Difference]: Start difference. First operand 1369 states and 3839 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:43,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:43,387 INFO L93 Difference]: Finished difference Result 1575 states and 4380 transitions. [2021-06-05 13:12:43,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:43,387 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:43,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:43,389 INFO L225 Difference]: With dead ends: 1575 [2021-06-05 13:12:43,389 INFO L226 Difference]: Without dead ends: 1464 [2021-06-05 13:12:43,389 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:43,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-06-05 13:12:43,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1349. [2021-06-05 13:12:43,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 2.807121661721068) internal successors, (3784), 1348 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:43,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 3784 transitions. [2021-06-05 13:12:43,404 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 3784 transitions. Word has length 26 [2021-06-05 13:12:43,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:43,404 INFO L482 AbstractCegarLoop]: Abstraction has 1349 states and 3784 transitions. [2021-06-05 13:12:43,404 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:43,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 3784 transitions. [2021-06-05 13:12:43,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:43,405 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:43,405 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:43,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-06-05 13:12:43,405 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:43,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:43,405 INFO L82 PathProgramCache]: Analyzing trace with hash 40111740, now seen corresponding path program 208 times [2021-06-05 13:12:43,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:43,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145922026] [2021-06-05 13:12:43,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:43,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:43,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:43,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145922026] [2021-06-05 13:12:43,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145922026] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:43,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:43,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:43,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973564396] [2021-06-05 13:12:43,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:43,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:43,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:43,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:43,457 INFO L87 Difference]: Start difference. First operand 1349 states and 3784 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:43,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:43,597 INFO L93 Difference]: Finished difference Result 1533 states and 4263 transitions. [2021-06-05 13:12:43,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:43,597 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:43,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:43,599 INFO L225 Difference]: With dead ends: 1533 [2021-06-05 13:12:43,599 INFO L226 Difference]: Without dead ends: 1448 [2021-06-05 13:12:43,599 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:43,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2021-06-05 13:12:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1355. [2021-06-05 13:12:43,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1354 states have (on average 2.8020679468242244) internal successors, (3794), 1354 states have internal predecessors, (3794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:43,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 3794 transitions. [2021-06-05 13:12:43,613 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 3794 transitions. Word has length 26 [2021-06-05 13:12:43,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:43,613 INFO L482 AbstractCegarLoop]: Abstraction has 1355 states and 3794 transitions. [2021-06-05 13:12:43,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:43,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 3794 transitions. [2021-06-05 13:12:43,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:43,614 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:43,614 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:43,614 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-06-05 13:12:43,615 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:43,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:43,615 INFO L82 PathProgramCache]: Analyzing trace with hash 909556348, now seen corresponding path program 209 times [2021-06-05 13:12:43,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:43,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545340562] [2021-06-05 13:12:43,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:43,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:43,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:43,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545340562] [2021-06-05 13:12:43,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545340562] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:43,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:43,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:43,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055634023] [2021-06-05 13:12:43,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:43,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:43,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:43,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:43,666 INFO L87 Difference]: Start difference. First operand 1355 states and 3794 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:43,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:43,818 INFO L93 Difference]: Finished difference Result 1554 states and 4325 transitions. [2021-06-05 13:12:43,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:43,818 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:43,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:43,820 INFO L225 Difference]: With dead ends: 1554 [2021-06-05 13:12:43,820 INFO L226 Difference]: Without dead ends: 1459 [2021-06-05 13:12:43,820 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:43,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2021-06-05 13:12:43,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1367. [2021-06-05 13:12:43,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1366 states have (on average 2.7986822840409955) internal successors, (3823), 1366 states have internal predecessors, (3823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 3823 transitions. [2021-06-05 13:12:43,834 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 3823 transitions. Word has length 26 [2021-06-05 13:12:43,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:43,834 INFO L482 AbstractCegarLoop]: Abstraction has 1367 states and 3823 transitions. [2021-06-05 13:12:43,834 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:43,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 3823 transitions. [2021-06-05 13:12:43,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:43,835 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:43,835 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:43,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-06-05 13:12:43,836 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:43,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:43,836 INFO L82 PathProgramCache]: Analyzing trace with hash -559154882, now seen corresponding path program 210 times [2021-06-05 13:12:43,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:43,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700682099] [2021-06-05 13:12:43,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:43,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:43,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700682099] [2021-06-05 13:12:43,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700682099] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:43,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:43,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:43,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514241728] [2021-06-05 13:12:43,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:43,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:43,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:43,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:43,896 INFO L87 Difference]: Start difference. First operand 1367 states and 3823 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:44,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:44,070 INFO L93 Difference]: Finished difference Result 1615 states and 4457 transitions. [2021-06-05 13:12:44,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:44,071 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:44,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:44,073 INFO L225 Difference]: With dead ends: 1615 [2021-06-05 13:12:44,073 INFO L226 Difference]: Without dead ends: 1530 [2021-06-05 13:12:44,073 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:44,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2021-06-05 13:12:44,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1391. [2021-06-05 13:12:44,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 2.7978417266187052) internal successors, (3889), 1390 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:44,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 3889 transitions. [2021-06-05 13:12:44,087 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 3889 transitions. Word has length 26 [2021-06-05 13:12:44,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:44,087 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 3889 transitions. [2021-06-05 13:12:44,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:44,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 3889 transitions. [2021-06-05 13:12:44,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:44,089 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:44,089 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:44,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-06-05 13:12:44,089 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:44,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:44,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1132552158, now seen corresponding path program 211 times [2021-06-05 13:12:44,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:44,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650721510] [2021-06-05 13:12:44,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:44,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:44,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650721510] [2021-06-05 13:12:44,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650721510] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:44,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:44,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:44,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373412144] [2021-06-05 13:12:44,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:44,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:44,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:44,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:44,153 INFO L87 Difference]: Start difference. First operand 1391 states and 3889 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:44,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:44,326 INFO L93 Difference]: Finished difference Result 1549 states and 4282 transitions. [2021-06-05 13:12:44,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:44,327 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:44,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:44,329 INFO L225 Difference]: With dead ends: 1549 [2021-06-05 13:12:44,329 INFO L226 Difference]: Without dead ends: 1466 [2021-06-05 13:12:44,329 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:44,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-06-05 13:12:44,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1397. [2021-06-05 13:12:44,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 2.791547277936963) internal successors, (3897), 1396 states have internal predecessors, (3897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:44,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 3897 transitions. [2021-06-05 13:12:44,343 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 3897 transitions. Word has length 26 [2021-06-05 13:12:44,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:44,343 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 3897 transitions. [2021-06-05 13:12:44,343 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:44,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 3897 transitions. [2021-06-05 13:12:44,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:44,344 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:44,344 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:44,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-06-05 13:12:44,345 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:44,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:44,345 INFO L82 PathProgramCache]: Analyzing trace with hash -546001310, now seen corresponding path program 212 times [2021-06-05 13:12:44,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:44,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885289633] [2021-06-05 13:12:44,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:44,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:44,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885289633] [2021-06-05 13:12:44,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885289633] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:44,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:44,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:44,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646051728] [2021-06-05 13:12:44,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:44,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:44,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:44,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:44,405 INFO L87 Difference]: Start difference. First operand 1397 states and 3897 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:44,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:44,581 INFO L93 Difference]: Finished difference Result 1624 states and 4492 transitions. [2021-06-05 13:12:44,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:44,582 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:44,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:44,583 INFO L225 Difference]: With dead ends: 1624 [2021-06-05 13:12:44,583 INFO L226 Difference]: Without dead ends: 1536 [2021-06-05 13:12:44,584 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:44,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2021-06-05 13:12:44,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1423. [2021-06-05 13:12:44,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1422 states have (on average 2.7939521800281293) internal successors, (3973), 1422 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:44,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 3973 transitions. [2021-06-05 13:12:44,599 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 3973 transitions. Word has length 26 [2021-06-05 13:12:44,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:44,599 INFO L482 AbstractCegarLoop]: Abstraction has 1423 states and 3973 transitions. [2021-06-05 13:12:44,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:44,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 3973 transitions. [2021-06-05 13:12:44,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:44,600 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:44,600 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:44,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-06-05 13:12:44,600 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:44,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:44,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1258069152, now seen corresponding path program 213 times [2021-06-05 13:12:44,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:44,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459021110] [2021-06-05 13:12:44,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:44,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:44,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459021110] [2021-06-05 13:12:44,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459021110] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:44,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:44,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:44,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961797728] [2021-06-05 13:12:44,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:44,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:44,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:44,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:44,661 INFO L87 Difference]: Start difference. First operand 1423 states and 3973 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:44,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:44,837 INFO L93 Difference]: Finished difference Result 1572 states and 4345 transitions. [2021-06-05 13:12:44,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:44,838 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:44,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:44,840 INFO L225 Difference]: With dead ends: 1572 [2021-06-05 13:12:44,840 INFO L226 Difference]: Without dead ends: 1484 [2021-06-05 13:12:44,840 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:44,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2021-06-05 13:12:44,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1415. [2021-06-05 13:12:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1414 states have (on average 2.799151343705799) internal successors, (3958), 1414 states have internal predecessors, (3958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:44,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 3958 transitions. [2021-06-05 13:12:44,854 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 3958 transitions. Word has length 26 [2021-06-05 13:12:44,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:44,854 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 3958 transitions. [2021-06-05 13:12:44,854 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:44,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 3958 transitions. [2021-06-05 13:12:44,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:44,856 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:44,856 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:44,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-06-05 13:12:44,856 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:44,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:44,856 INFO L82 PathProgramCache]: Analyzing trace with hash -92316360, now seen corresponding path program 214 times [2021-06-05 13:12:44,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:44,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815377049] [2021-06-05 13:12:44,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:44,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:44,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815377049] [2021-06-05 13:12:44,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815377049] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:44,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:44,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:44,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907143362] [2021-06-05 13:12:44,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:44,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:44,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:44,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:44,916 INFO L87 Difference]: Start difference. First operand 1415 states and 3958 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:45,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:45,093 INFO L93 Difference]: Finished difference Result 1653 states and 4558 transitions. [2021-06-05 13:12:45,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:45,094 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:45,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:45,095 INFO L225 Difference]: With dead ends: 1653 [2021-06-05 13:12:45,095 INFO L226 Difference]: Without dead ends: 1514 [2021-06-05 13:12:45,096 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:45,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-06-05 13:12:45,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1381. [2021-06-05 13:12:45,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1380 states have (on average 2.7971014492753623) internal successors, (3860), 1380 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:45,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 3860 transitions. [2021-06-05 13:12:45,110 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 3860 transitions. Word has length 26 [2021-06-05 13:12:45,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:45,110 INFO L482 AbstractCegarLoop]: Abstraction has 1381 states and 3860 transitions. [2021-06-05 13:12:45,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:45,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 3860 transitions. [2021-06-05 13:12:45,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:45,111 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:45,111 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:45,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-06-05 13:12:45,112 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:45,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:45,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1103631634, now seen corresponding path program 215 times [2021-06-05 13:12:45,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:45,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487012950] [2021-06-05 13:12:45,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:45,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:45,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:45,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487012950] [2021-06-05 13:12:45,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487012950] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:45,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:45,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:45,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430740658] [2021-06-05 13:12:45,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:45,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:45,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:45,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:45,172 INFO L87 Difference]: Start difference. First operand 1381 states and 3860 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:45,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:45,348 INFO L93 Difference]: Finished difference Result 1627 states and 4481 transitions. [2021-06-05 13:12:45,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:45,349 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:45,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:45,350 INFO L225 Difference]: With dead ends: 1627 [2021-06-05 13:12:45,350 INFO L226 Difference]: Without dead ends: 1465 [2021-06-05 13:12:45,351 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:45,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2021-06-05 13:12:45,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1360. [2021-06-05 13:12:45,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 2.7991169977924946) internal successors, (3804), 1359 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:45,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 3804 transitions. [2021-06-05 13:12:45,380 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 3804 transitions. Word has length 26 [2021-06-05 13:12:45,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:45,380 INFO L482 AbstractCegarLoop]: Abstraction has 1360 states and 3804 transitions. [2021-06-05 13:12:45,380 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:45,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 3804 transitions. [2021-06-05 13:12:45,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:45,381 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:45,381 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:45,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-06-05 13:12:45,381 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:45,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:45,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1441326566, now seen corresponding path program 216 times [2021-06-05 13:12:45,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:45,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638027371] [2021-06-05 13:12:45,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:45,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:45,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638027371] [2021-06-05 13:12:45,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638027371] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:45,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:45,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:45,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326507386] [2021-06-05 13:12:45,442 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:45,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:45,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:45,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:45,442 INFO L87 Difference]: Start difference. First operand 1360 states and 3804 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:45,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:45,617 INFO L93 Difference]: Finished difference Result 1494 states and 4137 transitions. [2021-06-05 13:12:45,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:45,618 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:45,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:45,619 INFO L225 Difference]: With dead ends: 1494 [2021-06-05 13:12:45,619 INFO L226 Difference]: Without dead ends: 1409 [2021-06-05 13:12:45,619 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:45,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2021-06-05 13:12:45,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1353. [2021-06-05 13:12:45,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 1352 states have (on average 2.794378698224852) internal successors, (3778), 1352 states have internal predecessors, (3778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:45,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 3778 transitions. [2021-06-05 13:12:45,633 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 3778 transitions. Word has length 26 [2021-06-05 13:12:45,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:45,633 INFO L482 AbstractCegarLoop]: Abstraction has 1353 states and 3778 transitions. [2021-06-05 13:12:45,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:45,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 3778 transitions. [2021-06-05 13:12:45,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:45,635 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:45,635 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:45,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-06-05 13:12:45,635 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:45,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:45,635 INFO L82 PathProgramCache]: Analyzing trace with hash -571881958, now seen corresponding path program 217 times [2021-06-05 13:12:45,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:45,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581113232] [2021-06-05 13:12:45,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:45,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:45,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:45,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581113232] [2021-06-05 13:12:45,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581113232] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:45,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:45,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:45,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128041779] [2021-06-05 13:12:45,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:45,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:45,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:45,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:45,698 INFO L87 Difference]: Start difference. First operand 1353 states and 3778 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:45,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:45,873 INFO L93 Difference]: Finished difference Result 1511 states and 4172 transitions. [2021-06-05 13:12:45,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:45,873 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:45,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:45,875 INFO L225 Difference]: With dead ends: 1511 [2021-06-05 13:12:45,875 INFO L226 Difference]: Without dead ends: 1416 [2021-06-05 13:12:45,875 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:45,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-06-05 13:12:45,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1354. [2021-06-05 13:12:45,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 2.793052475979305) internal successors, (3779), 1353 states have internal predecessors, (3779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:45,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 3779 transitions. [2021-06-05 13:12:45,889 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 3779 transitions. Word has length 26 [2021-06-05 13:12:45,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:45,889 INFO L482 AbstractCegarLoop]: Abstraction has 1354 states and 3779 transitions. [2021-06-05 13:12:45,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:45,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 3779 transitions. [2021-06-05 13:12:45,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:45,890 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:45,890 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:45,890 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-06-05 13:12:45,890 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:45,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:45,891 INFO L82 PathProgramCache]: Analyzing trace with hash -2040593188, now seen corresponding path program 218 times [2021-06-05 13:12:45,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:45,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379142260] [2021-06-05 13:12:45,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:45,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:45,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:45,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379142260] [2021-06-05 13:12:45,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379142260] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:45,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:45,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:45,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334838568] [2021-06-05 13:12:45,951 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:45,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:45,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:45,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:45,951 INFO L87 Difference]: Start difference. First operand 1354 states and 3779 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:46,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:46,127 INFO L93 Difference]: Finished difference Result 1525 states and 4210 transitions. [2021-06-05 13:12:46,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:46,127 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:46,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:46,129 INFO L225 Difference]: With dead ends: 1525 [2021-06-05 13:12:46,129 INFO L226 Difference]: Without dead ends: 1440 [2021-06-05 13:12:46,129 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:46,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-06-05 13:12:46,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1356. [2021-06-05 13:12:46,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 2.7948339483394835) internal successors, (3787), 1355 states have internal predecessors, (3787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:46,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 3787 transitions. [2021-06-05 13:12:46,143 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 3787 transitions. Word has length 26 [2021-06-05 13:12:46,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:46,143 INFO L482 AbstractCegarLoop]: Abstraction has 1356 states and 3787 transitions. [2021-06-05 13:12:46,143 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:46,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 3787 transitions. [2021-06-05 13:12:46,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:46,144 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:46,144 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:46,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-06-05 13:12:46,144 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:46,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:46,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1680976832, now seen corresponding path program 219 times [2021-06-05 13:12:46,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:46,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269978687] [2021-06-05 13:12:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:46,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:46,206 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:46,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269978687] [2021-06-05 13:12:46,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269978687] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:46,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:46,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:46,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809214452] [2021-06-05 13:12:46,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:46,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:46,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:46,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:46,207 INFO L87 Difference]: Start difference. First operand 1356 states and 3787 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:46,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:46,381 INFO L93 Difference]: Finished difference Result 1497 states and 4138 transitions. [2021-06-05 13:12:46,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:46,382 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:46,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:46,384 INFO L225 Difference]: With dead ends: 1497 [2021-06-05 13:12:46,384 INFO L226 Difference]: Without dead ends: 1414 [2021-06-05 13:12:46,384 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:46,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2021-06-05 13:12:46,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1357. [2021-06-05 13:12:46,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1356 states have (on average 2.7942477876106193) internal successors, (3789), 1356 states have internal predecessors, (3789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:46,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 3789 transitions. [2021-06-05 13:12:46,398 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 3789 transitions. Word has length 26 [2021-06-05 13:12:46,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:46,398 INFO L482 AbstractCegarLoop]: Abstraction has 1357 states and 3789 transitions. [2021-06-05 13:12:46,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 3789 transitions. [2021-06-05 13:12:46,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:46,399 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:46,399 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:46,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-06-05 13:12:46,399 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:46,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:46,399 INFO L82 PathProgramCache]: Analyzing trace with hash -2027439616, now seen corresponding path program 220 times [2021-06-05 13:12:46,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:46,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781270666] [2021-06-05 13:12:46,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:46,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:46,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781270666] [2021-06-05 13:12:46,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781270666] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:46,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:46,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:46,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474651373] [2021-06-05 13:12:46,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:46,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:46,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:46,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:46,472 INFO L87 Difference]: Start difference. First operand 1357 states and 3789 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:46,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:46,642 INFO L93 Difference]: Finished difference Result 1489 states and 4130 transitions. [2021-06-05 13:12:46,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:46,643 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:46,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:46,645 INFO L225 Difference]: With dead ends: 1489 [2021-06-05 13:12:46,645 INFO L226 Difference]: Without dead ends: 1401 [2021-06-05 13:12:46,645 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:46,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2021-06-05 13:12:46,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1361. [2021-06-05 13:12:46,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1360 states have (on average 2.7948529411764707) internal successors, (3801), 1360 states have internal predecessors, (3801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:46,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 3801 transitions. [2021-06-05 13:12:46,659 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 3801 transitions. Word has length 26 [2021-06-05 13:12:46,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:46,659 INFO L482 AbstractCegarLoop]: Abstraction has 1361 states and 3801 transitions. [2021-06-05 13:12:46,659 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:46,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 3801 transitions. [2021-06-05 13:12:46,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:46,660 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:46,660 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:46,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-06-05 13:12:46,661 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:46,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:46,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1555459838, now seen corresponding path program 221 times [2021-06-05 13:12:46,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:46,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869546072] [2021-06-05 13:12:46,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:46,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:46,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:46,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869546072] [2021-06-05 13:12:46,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869546072] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:46,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:46,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:46,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691525463] [2021-06-05 13:12:46,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:46,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:46,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:46,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:46,722 INFO L87 Difference]: Start difference. First operand 1361 states and 3801 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:46,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:46,896 INFO L93 Difference]: Finished difference Result 1502 states and 4148 transitions. [2021-06-05 13:12:46,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:46,897 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:46,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:46,899 INFO L225 Difference]: With dead ends: 1502 [2021-06-05 13:12:46,899 INFO L226 Difference]: Without dead ends: 1414 [2021-06-05 13:12:46,899 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:46,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2021-06-05 13:12:46,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1360. [2021-06-05 13:12:46,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 2.7969094922737305) internal successors, (3801), 1359 states have internal predecessors, (3801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:46,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 3801 transitions. [2021-06-05 13:12:46,912 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 3801 transitions. Word has length 26 [2021-06-05 13:12:46,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:46,913 INFO L482 AbstractCegarLoop]: Abstraction has 1360 states and 3801 transitions. [2021-06-05 13:12:46,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:46,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 3801 transitions. [2021-06-05 13:12:46,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:46,914 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:46,914 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:46,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-06-05 13:12:46,914 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:46,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:46,914 INFO L82 PathProgramCache]: Analyzing trace with hash -528175042, now seen corresponding path program 222 times [2021-06-05 13:12:46,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:46,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922247164] [2021-06-05 13:12:46,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:46,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:46,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:46,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922247164] [2021-06-05 13:12:46,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922247164] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:46,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:46,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:46,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204199497] [2021-06-05 13:12:46,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:46,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:46,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:46,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:46,984 INFO L87 Difference]: Start difference. First operand 1360 states and 3801 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:47,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:47,159 INFO L93 Difference]: Finished difference Result 1528 states and 4222 transitions. [2021-06-05 13:12:47,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:47,159 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:47,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:47,161 INFO L225 Difference]: With dead ends: 1528 [2021-06-05 13:12:47,161 INFO L226 Difference]: Without dead ends: 1443 [2021-06-05 13:12:47,161 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:47,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-06-05 13:12:47,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1358. [2021-06-05 13:12:47,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 2.7951363301400147) internal successors, (3793), 1357 states have internal predecessors, (3793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:47,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 3793 transitions. [2021-06-05 13:12:47,175 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 3793 transitions. Word has length 26 [2021-06-05 13:12:47,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:47,175 INFO L482 AbstractCegarLoop]: Abstraction has 1358 states and 3793 transitions. [2021-06-05 13:12:47,175 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:47,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 3793 transitions. [2021-06-05 13:12:47,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:47,177 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:47,177 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:47,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-06-05 13:12:47,177 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:47,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:47,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1101572318, now seen corresponding path program 223 times [2021-06-05 13:12:47,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:47,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120974866] [2021-06-05 13:12:47,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:47,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:47,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120974866] [2021-06-05 13:12:47,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120974866] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:47,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:47,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:47,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213715438] [2021-06-05 13:12:47,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:47,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:47,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:47,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:47,262 INFO L87 Difference]: Start difference. First operand 1358 states and 3793 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:47,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:47,440 INFO L93 Difference]: Finished difference Result 1519 states and 4205 transitions. [2021-06-05 13:12:47,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:47,440 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:47,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:47,442 INFO L225 Difference]: With dead ends: 1519 [2021-06-05 13:12:47,442 INFO L226 Difference]: Without dead ends: 1436 [2021-06-05 13:12:47,442 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:47,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-06-05 13:12:47,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1359. [2021-06-05 13:12:47,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1358 states have (on average 2.792341678939617) internal successors, (3792), 1358 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:47,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 3792 transitions. [2021-06-05 13:12:47,457 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 3792 transitions. Word has length 26 [2021-06-05 13:12:47,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:47,457 INFO L482 AbstractCegarLoop]: Abstraction has 1359 states and 3792 transitions. [2021-06-05 13:12:47,457 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:47,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 3792 transitions. [2021-06-05 13:12:47,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:47,458 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:47,458 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:47,458 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-06-05 13:12:47,458 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:47,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:47,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1944327842, now seen corresponding path program 224 times [2021-06-05 13:12:47,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:47,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631451919] [2021-06-05 13:12:47,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:47,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:47,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631451919] [2021-06-05 13:12:47,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631451919] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:47,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:47,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:47,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986532421] [2021-06-05 13:12:47,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:47,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:47,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:47,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:47,529 INFO L87 Difference]: Start difference. First operand 1359 states and 3792 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:47,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:47,698 INFO L93 Difference]: Finished difference Result 1503 states and 4164 transitions. [2021-06-05 13:12:47,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:47,698 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:47,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:47,700 INFO L225 Difference]: With dead ends: 1503 [2021-06-05 13:12:47,700 INFO L226 Difference]: Without dead ends: 1416 [2021-06-05 13:12:47,700 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:47,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-06-05 13:12:47,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1358. [2021-06-05 13:12:47,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 2.7943994104642593) internal successors, (3792), 1357 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:47,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 3792 transitions. [2021-06-05 13:12:47,714 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 3792 transitions. Word has length 26 [2021-06-05 13:12:47,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:47,714 INFO L482 AbstractCegarLoop]: Abstraction has 1358 states and 3792 transitions. [2021-06-05 13:12:47,714 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:47,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 3792 transitions. [2021-06-05 13:12:47,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:47,715 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:47,715 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:47,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-06-05 13:12:47,715 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:47,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:47,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1204204642, now seen corresponding path program 225 times [2021-06-05 13:12:47,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:47,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538388644] [2021-06-05 13:12:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:47,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:47,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:47,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538388644] [2021-06-05 13:12:47,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538388644] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:47,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:47,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:47,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780552329] [2021-06-05 13:12:47,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:47,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:47,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:47,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:47,779 INFO L87 Difference]: Start difference. First operand 1358 states and 3792 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:47,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:47,946 INFO L93 Difference]: Finished difference Result 1491 states and 4141 transitions. [2021-06-05 13:12:47,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:47,946 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:47,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:47,948 INFO L225 Difference]: With dead ends: 1491 [2021-06-05 13:12:47,948 INFO L226 Difference]: Without dead ends: 1403 [2021-06-05 13:12:47,948 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:47,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2021-06-05 13:12:47,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1360. [2021-06-05 13:12:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 2.795437821927888) internal successors, (3799), 1359 states have internal predecessors, (3799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:47,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 3799 transitions. [2021-06-05 13:12:47,962 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 3799 transitions. Word has length 26 [2021-06-05 13:12:47,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:47,962 INFO L482 AbstractCegarLoop]: Abstraction has 1360 states and 3799 transitions. [2021-06-05 13:12:47,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:47,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 3799 transitions. [2021-06-05 13:12:47,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:47,963 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:47,963 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:47,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-06-05 13:12:47,963 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:47,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:47,963 INFO L82 PathProgramCache]: Analyzing trace with hash 492136800, now seen corresponding path program 226 times [2021-06-05 13:12:47,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:47,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313825687] [2021-06-05 13:12:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:48,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:48,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:48,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313825687] [2021-06-05 13:12:48,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313825687] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:48,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:48,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:48,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106910103] [2021-06-05 13:12:48,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:48,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:48,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:48,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:48,023 INFO L87 Difference]: Start difference. First operand 1360 states and 3799 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:48,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:48,219 INFO L93 Difference]: Finished difference Result 1499 states and 4143 transitions. [2021-06-05 13:12:48,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:48,219 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:48,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:48,221 INFO L225 Difference]: With dead ends: 1499 [2021-06-05 13:12:48,221 INFO L226 Difference]: Without dead ends: 1413 [2021-06-05 13:12:48,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:48,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2021-06-05 13:12:48,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1359. [2021-06-05 13:12:48,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1358 states have (on average 2.792341678939617) internal successors, (3792), 1358 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:48,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 3792 transitions. [2021-06-05 13:12:48,236 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 3792 transitions. Word has length 26 [2021-06-05 13:12:48,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:48,236 INFO L482 AbstractCegarLoop]: Abstraction has 1359 states and 3792 transitions. [2021-06-05 13:12:48,236 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:48,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 3792 transitions. [2021-06-05 13:12:48,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:48,237 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:48,237 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:48,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-06-05 13:12:48,237 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:48,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:48,238 INFO L82 PathProgramCache]: Analyzing trace with hash -187939904, now seen corresponding path program 227 times [2021-06-05 13:12:48,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:48,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113586839] [2021-06-05 13:12:48,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:48,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:48,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:48,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113586839] [2021-06-05 13:12:48,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113586839] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:48,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:48,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:48,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252651473] [2021-06-05 13:12:48,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:48,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:48,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:48,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:48,299 INFO L87 Difference]: Start difference. First operand 1359 states and 3792 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:48,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:48,473 INFO L93 Difference]: Finished difference Result 1555 states and 4298 transitions. [2021-06-05 13:12:48,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:48,474 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:48,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:48,475 INFO L225 Difference]: With dead ends: 1555 [2021-06-05 13:12:48,475 INFO L226 Difference]: Without dead ends: 1458 [2021-06-05 13:12:48,476 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:48,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2021-06-05 13:12:48,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1352. [2021-06-05 13:12:48,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 2.789785344189489) internal successors, (3769), 1351 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:48,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 3769 transitions. [2021-06-05 13:12:48,490 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 3769 transitions. Word has length 26 [2021-06-05 13:12:48,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:48,490 INFO L482 AbstractCegarLoop]: Abstraction has 1352 states and 3769 transitions. [2021-06-05 13:12:48,490 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:48,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 3769 transitions. [2021-06-05 13:12:48,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:48,491 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:48,491 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:48,491 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-06-05 13:12:48,491 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:48,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:48,492 INFO L82 PathProgramCache]: Analyzing trace with hash 402377150, now seen corresponding path program 228 times [2021-06-05 13:12:48,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:48,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254195142] [2021-06-05 13:12:48,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:48,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:48,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254195142] [2021-06-05 13:12:48,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254195142] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:48,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:48,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:48,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181249969] [2021-06-05 13:12:48,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:48,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:48,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:48,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:48,560 INFO L87 Difference]: Start difference. First operand 1352 states and 3769 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:48,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:48,740 INFO L93 Difference]: Finished difference Result 1504 states and 4155 transitions. [2021-06-05 13:12:48,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:48,740 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:48,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:48,742 INFO L225 Difference]: With dead ends: 1504 [2021-06-05 13:12:48,742 INFO L226 Difference]: Without dead ends: 1415 [2021-06-05 13:12:48,742 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:48,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2021-06-05 13:12:48,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1347. [2021-06-05 13:12:48,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1346 states have (on average 2.791976225854383) internal successors, (3758), 1346 states have internal predecessors, (3758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:48,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 3758 transitions. [2021-06-05 13:12:48,758 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 3758 transitions. Word has length 26 [2021-06-05 13:12:48,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:48,758 INFO L482 AbstractCegarLoop]: Abstraction has 1347 states and 3758 transitions. [2021-06-05 13:12:48,758 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:48,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 3758 transitions. [2021-06-05 13:12:48,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:48,760 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:48,760 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:48,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-06-05 13:12:48,760 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:48,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:48,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1005160398, now seen corresponding path program 229 times [2021-06-05 13:12:48,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:48,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778982074] [2021-06-05 13:12:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:48,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:48,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778982074] [2021-06-05 13:12:48,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778982074] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:48,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:48,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:48,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017717024] [2021-06-05 13:12:48,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:48,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:48,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:48,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:48,817 INFO L87 Difference]: Start difference. First operand 1347 states and 3758 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:48,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:48,957 INFO L93 Difference]: Finished difference Result 1541 states and 4265 transitions. [2021-06-05 13:12:48,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:48,957 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:48,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:48,959 INFO L225 Difference]: With dead ends: 1541 [2021-06-05 13:12:48,959 INFO L226 Difference]: Without dead ends: 1453 [2021-06-05 13:12:48,959 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:48,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-05 13:12:48,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1373. [2021-06-05 13:12:48,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1372 states have (on average 2.794460641399417) internal successors, (3834), 1372 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:48,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 3834 transitions. [2021-06-05 13:12:48,973 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 3834 transitions. Word has length 26 [2021-06-05 13:12:48,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:48,973 INFO L482 AbstractCegarLoop]: Abstraction has 1373 states and 3834 transitions. [2021-06-05 13:12:48,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:48,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 3834 transitions. [2021-06-05 13:12:48,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:48,975 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:48,975 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:48,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-06-05 13:12:48,975 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:48,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:48,975 INFO L82 PathProgramCache]: Analyzing trace with hash 293092556, now seen corresponding path program 230 times [2021-06-05 13:12:48,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:48,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280550480] [2021-06-05 13:12:48,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:49,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:49,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280550480] [2021-06-05 13:12:49,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280550480] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:49,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:49,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:49,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090077324] [2021-06-05 13:12:49,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:49,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:49,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:49,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:49,045 INFO L87 Difference]: Start difference. First operand 1373 states and 3834 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:49,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:49,237 INFO L93 Difference]: Finished difference Result 1604 states and 4405 transitions. [2021-06-05 13:12:49,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:49,237 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:49,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:49,239 INFO L225 Difference]: With dead ends: 1604 [2021-06-05 13:12:49,239 INFO L226 Difference]: Without dead ends: 1393 [2021-06-05 13:12:49,239 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:49,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-06-05 13:12:49,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1293. [2021-06-05 13:12:49,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 2.7809597523219813) internal successors, (3593), 1292 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:49,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3593 transitions. [2021-06-05 13:12:49,252 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3593 transitions. Word has length 26 [2021-06-05 13:12:49,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:49,252 INFO L482 AbstractCegarLoop]: Abstraction has 1293 states and 3593 transitions. [2021-06-05 13:12:49,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:49,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3593 transitions. [2021-06-05 13:12:49,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:49,254 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:49,254 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:49,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-06-05 13:12:49,254 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:49,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:49,254 INFO L82 PathProgramCache]: Analyzing trace with hash -705195920, now seen corresponding path program 231 times [2021-06-05 13:12:49,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:49,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122270484] [2021-06-05 13:12:49,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:49,343 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:49,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122270484] [2021-06-05 13:12:49,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122270484] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:49,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:49,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:49,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259814998] [2021-06-05 13:12:49,343 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:49,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:49,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:49,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:49,344 INFO L87 Difference]: Start difference. First operand 1293 states and 3593 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:49,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:49,523 INFO L93 Difference]: Finished difference Result 1480 states and 4066 transitions. [2021-06-05 13:12:49,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:49,523 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:49,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:49,525 INFO L225 Difference]: With dead ends: 1480 [2021-06-05 13:12:49,525 INFO L226 Difference]: Without dead ends: 1392 [2021-06-05 13:12:49,525 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:49,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-06-05 13:12:49,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1290. [2021-06-05 13:12:49,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 2.7812257564003104) internal successors, (3585), 1289 states have internal predecessors, (3585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:49,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 3585 transitions. [2021-06-05 13:12:49,538 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 3585 transitions. Word has length 26 [2021-06-05 13:12:49,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:49,538 INFO L482 AbstractCegarLoop]: Abstraction has 1290 states and 3585 transitions. [2021-06-05 13:12:49,538 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:49,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 3585 transitions. [2021-06-05 13:12:49,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:49,540 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:49,540 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:49,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-06-05 13:12:49,540 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:49,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:49,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1417263762, now seen corresponding path program 232 times [2021-06-05 13:12:49,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:49,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191754750] [2021-06-05 13:12:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:49,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:49,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191754750] [2021-06-05 13:12:49,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191754750] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:49,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:49,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:49,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042313180] [2021-06-05 13:12:49,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:49,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:49,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:49,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:49,606 INFO L87 Difference]: Start difference. First operand 1290 states and 3585 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:49,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:49,774 INFO L93 Difference]: Finished difference Result 1427 states and 3933 transitions. [2021-06-05 13:12:49,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:49,774 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:49,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:49,776 INFO L225 Difference]: With dead ends: 1427 [2021-06-05 13:12:49,776 INFO L226 Difference]: Without dead ends: 1341 [2021-06-05 13:12:49,776 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:49,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-06-05 13:12:49,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1293. [2021-06-05 13:12:49,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 2.778637770897833) internal successors, (3590), 1292 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3590 transitions. [2021-06-05 13:12:49,789 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3590 transitions. Word has length 26 [2021-06-05 13:12:49,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:49,789 INFO L482 AbstractCegarLoop]: Abstraction has 1293 states and 3590 transitions. [2021-06-05 13:12:49,789 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:49,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3590 transitions. [2021-06-05 13:12:49,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:49,790 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:49,790 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:49,790 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-06-05 13:12:49,790 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:49,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:49,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1507023412, now seen corresponding path program 233 times [2021-06-05 13:12:49,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:49,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446470107] [2021-06-05 13:12:49,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:49,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:49,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:49,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446470107] [2021-06-05 13:12:49,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446470107] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:49,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:49,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:49,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390399005] [2021-06-05 13:12:49,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:49,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:49,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:49,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:49,865 INFO L87 Difference]: Start difference. First operand 1293 states and 3590 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:50,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:50,032 INFO L93 Difference]: Finished difference Result 1430 states and 3930 transitions. [2021-06-05 13:12:50,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:50,032 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:50,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:50,033 INFO L225 Difference]: With dead ends: 1430 [2021-06-05 13:12:50,034 INFO L226 Difference]: Without dead ends: 1298 [2021-06-05 13:12:50,034 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:50,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-06-05 13:12:50,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1201. [2021-06-05 13:12:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1200 states have (on average 2.7925) internal successors, (3351), 1200 states have internal predecessors, (3351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:50,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 3351 transitions. [2021-06-05 13:12:50,046 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 3351 transitions. Word has length 26 [2021-06-05 13:12:50,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:50,046 INFO L482 AbstractCegarLoop]: Abstraction has 1201 states and 3351 transitions. [2021-06-05 13:12:50,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:50,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 3351 transitions. [2021-06-05 13:12:50,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:50,047 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:50,047 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:50,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-06-05 13:12:50,047 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:50,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:50,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1300378374, now seen corresponding path program 234 times [2021-06-05 13:12:50,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:50,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384169822] [2021-06-05 13:12:50,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:50,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:50,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384169822] [2021-06-05 13:12:50,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384169822] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:50,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:50,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:50,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187527696] [2021-06-05 13:12:50,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:50,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:50,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:50,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:50,099 INFO L87 Difference]: Start difference. First operand 1201 states and 3351 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:50,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:50,226 INFO L93 Difference]: Finished difference Result 1516 states and 4163 transitions. [2021-06-05 13:12:50,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:50,227 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:50,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:50,228 INFO L225 Difference]: With dead ends: 1516 [2021-06-05 13:12:50,228 INFO L226 Difference]: Without dead ends: 1341 [2021-06-05 13:12:50,228 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:50,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-06-05 13:12:50,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1275. [2021-06-05 13:12:50,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1274 states have (on average 2.770800627943485) internal successors, (3530), 1274 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:50,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3530 transitions. [2021-06-05 13:12:50,253 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3530 transitions. Word has length 26 [2021-06-05 13:12:50,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:50,254 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3530 transitions. [2021-06-05 13:12:50,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:50,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3530 transitions. [2021-06-05 13:12:50,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:50,255 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:50,255 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:50,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-06-05 13:12:50,255 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:50,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:50,255 INFO L82 PathProgramCache]: Analyzing trace with hash 2135003928, now seen corresponding path program 235 times [2021-06-05 13:12:50,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:50,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901492899] [2021-06-05 13:12:50,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:50,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:50,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901492899] [2021-06-05 13:12:50,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901492899] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:50,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:50,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:50,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121702157] [2021-06-05 13:12:50,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:50,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:50,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:50,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:50,322 INFO L87 Difference]: Start difference. First operand 1275 states and 3530 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:50,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:50,484 INFO L93 Difference]: Finished difference Result 1474 states and 4020 transitions. [2021-06-05 13:12:50,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:50,484 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:50,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:50,486 INFO L225 Difference]: With dead ends: 1474 [2021-06-05 13:12:50,486 INFO L226 Difference]: Without dead ends: 1337 [2021-06-05 13:12:50,486 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:50,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2021-06-05 13:12:50,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1249. [2021-06-05 13:12:50,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 2.769230769230769) internal successors, (3456), 1248 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:50,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 3456 transitions. [2021-06-05 13:12:50,499 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 3456 transitions. Word has length 26 [2021-06-05 13:12:50,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:50,499 INFO L482 AbstractCegarLoop]: Abstraction has 1249 states and 3456 transitions. [2021-06-05 13:12:50,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 3456 transitions. [2021-06-05 13:12:50,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:50,500 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:50,500 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:50,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-06-05 13:12:50,501 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:50,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:50,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1232534076, now seen corresponding path program 236 times [2021-06-05 13:12:50,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:50,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589283268] [2021-06-05 13:12:50,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:50,564 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:50,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589283268] [2021-06-05 13:12:50,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589283268] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:50,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:50,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:50,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023329770] [2021-06-05 13:12:50,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:50,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:50,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:50,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:50,565 INFO L87 Difference]: Start difference. First operand 1249 states and 3456 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:50,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:50,694 INFO L93 Difference]: Finished difference Result 1527 states and 4192 transitions. [2021-06-05 13:12:50,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:50,694 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:50,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:50,696 INFO L225 Difference]: With dead ends: 1527 [2021-06-05 13:12:50,696 INFO L226 Difference]: Without dead ends: 1416 [2021-06-05 13:12:50,696 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:50,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-06-05 13:12:50,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1255. [2021-06-05 13:12:50,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 2.7639553429027113) internal successors, (3466), 1254 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 3466 transitions. [2021-06-05 13:12:50,709 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 3466 transitions. Word has length 26 [2021-06-05 13:12:50,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:50,709 INFO L482 AbstractCegarLoop]: Abstraction has 1255 states and 3466 transitions. [2021-06-05 13:12:50,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:50,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 3466 transitions. [2021-06-05 13:12:50,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:50,710 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:50,710 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:50,710 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-06-05 13:12:50,710 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:50,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:50,710 INFO L82 PathProgramCache]: Analyzing trace with hash 324282940, now seen corresponding path program 237 times [2021-06-05 13:12:50,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:50,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490586273] [2021-06-05 13:12:50,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:50,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:50,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:50,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490586273] [2021-06-05 13:12:50,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490586273] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:50,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:50,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:50,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653106913] [2021-06-05 13:12:50,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:50,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:50,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:50,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:50,770 INFO L87 Difference]: Start difference. First operand 1255 states and 3466 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:50,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:50,937 INFO L93 Difference]: Finished difference Result 1417 states and 3868 transitions. [2021-06-05 13:12:50,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:50,937 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:50,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:50,939 INFO L225 Difference]: With dead ends: 1417 [2021-06-05 13:12:50,939 INFO L226 Difference]: Without dead ends: 1324 [2021-06-05 13:12:50,939 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:50,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-06-05 13:12:50,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1258. [2021-06-05 13:12:50,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 2.7661097852028638) internal successors, (3477), 1257 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:50,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 3477 transitions. [2021-06-05 13:12:50,952 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 3477 transitions. Word has length 26 [2021-06-05 13:12:50,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:50,952 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 3477 transitions. [2021-06-05 13:12:50,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:50,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 3477 transitions. [2021-06-05 13:12:50,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:50,953 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:50,953 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:50,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-06-05 13:12:50,953 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:50,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:50,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1193727548, now seen corresponding path program 238 times [2021-06-05 13:12:50,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:50,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096762521] [2021-06-05 13:12:50,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:51,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:51,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:51,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096762521] [2021-06-05 13:12:51,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096762521] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:51,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:51,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:51,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665707675] [2021-06-05 13:12:51,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:51,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:51,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:51,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:51,014 INFO L87 Difference]: Start difference. First operand 1258 states and 3477 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:51,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:51,180 INFO L93 Difference]: Finished difference Result 1452 states and 3941 transitions. [2021-06-05 13:12:51,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:51,180 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:51,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:51,182 INFO L225 Difference]: With dead ends: 1452 [2021-06-05 13:12:51,182 INFO L226 Difference]: Without dead ends: 1334 [2021-06-05 13:12:51,182 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:51,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-06-05 13:12:51,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1252. [2021-06-05 13:12:51,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 2.7569944044764187) internal successors, (3449), 1251 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3449 transitions. [2021-06-05 13:12:51,195 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3449 transitions. Word has length 26 [2021-06-05 13:12:51,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:51,195 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3449 transitions. [2021-06-05 13:12:51,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:51,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3449 transitions. [2021-06-05 13:12:51,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:51,196 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:51,196 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:51,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-06-05 13:12:51,196 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:51,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:51,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1244858906, now seen corresponding path program 239 times [2021-06-05 13:12:51,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:51,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570019269] [2021-06-05 13:12:51,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:51,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:51,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:51,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570019269] [2021-06-05 13:12:51,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570019269] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:51,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:51,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:51,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905959567] [2021-06-05 13:12:51,265 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:51,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:51,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:51,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:51,266 INFO L87 Difference]: Start difference. First operand 1252 states and 3449 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:51,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:51,434 INFO L93 Difference]: Finished difference Result 1528 states and 4182 transitions. [2021-06-05 13:12:51,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:51,435 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:51,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:51,436 INFO L225 Difference]: With dead ends: 1528 [2021-06-05 13:12:51,436 INFO L226 Difference]: Without dead ends: 1420 [2021-06-05 13:12:51,437 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:51,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-06-05 13:12:51,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1249. [2021-06-05 13:12:51,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 2.7572115384615383) internal successors, (3441), 1248 states have internal predecessors, (3441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:51,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 3441 transitions. [2021-06-05 13:12:51,449 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 3441 transitions. Word has length 26 [2021-06-05 13:12:51,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:51,449 INFO L482 AbstractCegarLoop]: Abstraction has 1249 states and 3441 transitions. [2021-06-05 13:12:51,450 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:51,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 3441 transitions. [2021-06-05 13:12:51,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:51,451 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:51,451 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:51,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-06-05 13:12:51,451 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:51,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:51,451 INFO L82 PathProgramCache]: Analyzing trace with hash 396768502, now seen corresponding path program 240 times [2021-06-05 13:12:51,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:51,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347725696] [2021-06-05 13:12:51,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:51,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:51,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:51,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347725696] [2021-06-05 13:12:51,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347725696] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:51,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:51,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:51,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271563810] [2021-06-05 13:12:51,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:51,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:51,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:51,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:51,513 INFO L87 Difference]: Start difference. First operand 1249 states and 3441 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:51,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:51,644 INFO L93 Difference]: Finished difference Result 1511 states and 4128 transitions. [2021-06-05 13:12:51,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:51,644 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:51,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:51,646 INFO L225 Difference]: With dead ends: 1511 [2021-06-05 13:12:51,646 INFO L226 Difference]: Without dead ends: 1418 [2021-06-05 13:12:51,646 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:51,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2021-06-05 13:12:51,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1275. [2021-06-05 13:12:51,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1274 states have (on average 2.760596546310832) internal successors, (3517), 1274 states have internal predecessors, (3517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:51,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3517 transitions. [2021-06-05 13:12:51,659 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3517 transitions. Word has length 26 [2021-06-05 13:12:51,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:51,660 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3517 transitions. [2021-06-05 13:12:51,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:51,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3517 transitions. [2021-06-05 13:12:51,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:51,661 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:51,661 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:51,661 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-06-05 13:12:51,661 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:51,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:51,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1266213110, now seen corresponding path program 241 times [2021-06-05 13:12:51,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:51,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838777802] [2021-06-05 13:12:51,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:51,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:51,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:51,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838777802] [2021-06-05 13:12:51,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838777802] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:51,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:51,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:51,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599534977] [2021-06-05 13:12:51,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:51,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:51,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:51,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:51,725 INFO L87 Difference]: Start difference. First operand 1275 states and 3517 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:51,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:51,895 INFO L93 Difference]: Finished difference Result 1582 states and 4293 transitions. [2021-06-05 13:12:51,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:51,895 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:51,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:51,897 INFO L225 Difference]: With dead ends: 1582 [2021-06-05 13:12:51,897 INFO L226 Difference]: Without dead ends: 1369 [2021-06-05 13:12:51,897 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:51,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2021-06-05 13:12:51,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1275. [2021-06-05 13:12:51,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1274 states have (on average 2.740188383045526) internal successors, (3491), 1274 states have internal predecessors, (3491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:51,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3491 transitions. [2021-06-05 13:12:51,910 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3491 transitions. Word has length 26 [2021-06-05 13:12:51,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:51,910 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3491 transitions. [2021-06-05 13:12:51,910 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:51,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3491 transitions. [2021-06-05 13:12:51,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:51,911 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:51,911 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:51,911 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-06-05 13:12:51,911 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:51,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:51,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1140650728, now seen corresponding path program 242 times [2021-06-05 13:12:51,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:51,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441738900] [2021-06-05 13:12:51,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:51,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:51,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:51,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441738900] [2021-06-05 13:12:51,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441738900] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:51,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:51,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:51,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165449300] [2021-06-05 13:12:51,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:51,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:51,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:51,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:51,979 INFO L87 Difference]: Start difference. First operand 1275 states and 3491 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:52,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:52,141 INFO L93 Difference]: Finished difference Result 1460 states and 3935 transitions. [2021-06-05 13:12:52,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:52,141 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:52,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:52,143 INFO L225 Difference]: With dead ends: 1460 [2021-06-05 13:12:52,143 INFO L226 Difference]: Without dead ends: 1367 [2021-06-05 13:12:52,143 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:52,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2021-06-05 13:12:52,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1275. [2021-06-05 13:12:52,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1274 states have (on average 2.7370486656200943) internal successors, (3487), 1274 states have internal predecessors, (3487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:52,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3487 transitions. [2021-06-05 13:12:52,155 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3487 transitions. Word has length 26 [2021-06-05 13:12:52,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:52,155 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3487 transitions. [2021-06-05 13:12:52,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:52,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3487 transitions. [2021-06-05 13:12:52,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:52,157 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:52,157 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:52,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-06-05 13:12:52,157 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:52,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:52,157 INFO L82 PathProgramCache]: Analyzing trace with hash -271206120, now seen corresponding path program 243 times [2021-06-05 13:12:52,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:52,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445743755] [2021-06-05 13:12:52,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:52,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:52,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:52,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445743755] [2021-06-05 13:12:52,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445743755] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:52,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:52,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:52,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465313854] [2021-06-05 13:12:52,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:52,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:52,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:52,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:52,221 INFO L87 Difference]: Start difference. First operand 1275 states and 3487 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:52,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:52,389 INFO L93 Difference]: Finished difference Result 1471 states and 3964 transitions. [2021-06-05 13:12:52,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:52,389 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:52,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:52,391 INFO L225 Difference]: With dead ends: 1471 [2021-06-05 13:12:52,391 INFO L226 Difference]: Without dead ends: 1362 [2021-06-05 13:12:52,391 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:52,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-06-05 13:12:52,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1290. [2021-06-05 13:12:52,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 2.7331264546159812) internal successors, (3523), 1289 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:52,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 3523 transitions. [2021-06-05 13:12:52,404 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 3523 transitions. Word has length 26 [2021-06-05 13:12:52,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:52,404 INFO L482 AbstractCegarLoop]: Abstraction has 1290 states and 3523 transitions. [2021-06-05 13:12:52,404 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:52,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 3523 transitions. [2021-06-05 13:12:52,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:52,405 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:52,405 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:52,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-06-05 13:12:52,405 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:52,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:52,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1899862930, now seen corresponding path program 244 times [2021-06-05 13:12:52,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:52,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293066348] [2021-06-05 13:12:52,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:52,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:52,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:52,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293066348] [2021-06-05 13:12:52,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293066348] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:52,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:52,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:52,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900411347] [2021-06-05 13:12:52,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:52,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:52,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:52,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:52,470 INFO L87 Difference]: Start difference. First operand 1290 states and 3523 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:52,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:52,635 INFO L93 Difference]: Finished difference Result 1456 states and 3922 transitions. [2021-06-05 13:12:52,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:52,635 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:52,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:52,637 INFO L225 Difference]: With dead ends: 1456 [2021-06-05 13:12:52,637 INFO L226 Difference]: Without dead ends: 1294 [2021-06-05 13:12:52,637 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:52,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-06-05 13:12:52,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1245. [2021-06-05 13:12:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1244 states have (on average 2.741961414790997) internal successors, (3411), 1244 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3411 transitions. [2021-06-05 13:12:52,649 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3411 transitions. Word has length 26 [2021-06-05 13:12:52,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:52,649 INFO L482 AbstractCegarLoop]: Abstraction has 1245 states and 3411 transitions. [2021-06-05 13:12:52,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:52,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3411 transitions. [2021-06-05 13:12:52,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:52,650 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:52,650 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:52,650 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-06-05 13:12:52,650 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:52,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:52,650 INFO L82 PathProgramCache]: Analyzing trace with hash 760808728, now seen corresponding path program 245 times [2021-06-05 13:12:52,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:52,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86623197] [2021-06-05 13:12:52,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:52,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:52,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:52,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86623197] [2021-06-05 13:12:52,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86623197] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:52,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:52,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:52,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424830008] [2021-06-05 13:12:52,705 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:52,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:52,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:52,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:52,705 INFO L87 Difference]: Start difference. First operand 1245 states and 3411 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:52,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:52,836 INFO L93 Difference]: Finished difference Result 1475 states and 3997 transitions. [2021-06-05 13:12:52,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:52,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:52,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:52,837 INFO L225 Difference]: With dead ends: 1475 [2021-06-05 13:12:52,837 INFO L226 Difference]: Without dead ends: 1320 [2021-06-05 13:12:52,838 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:52,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-06-05 13:12:52,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1284. [2021-06-05 13:12:52,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1283 states have (on average 2.7217459080280593) internal successors, (3492), 1283 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:52,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 3492 transitions. [2021-06-05 13:12:52,850 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 3492 transitions. Word has length 26 [2021-06-05 13:12:52,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:52,850 INFO L482 AbstractCegarLoop]: Abstraction has 1284 states and 3492 transitions. [2021-06-05 13:12:52,850 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:52,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 3492 transitions. [2021-06-05 13:12:52,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:52,851 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:52,851 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:52,851 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-06-05 13:12:52,851 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:52,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:52,852 INFO L82 PathProgramCache]: Analyzing trace with hash -98776266, now seen corresponding path program 246 times [2021-06-05 13:12:52,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:52,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753481703] [2021-06-05 13:12:52,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:52,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:52,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:52,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753481703] [2021-06-05 13:12:52,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753481703] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:52,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:52,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:52,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802613143] [2021-06-05 13:12:52,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:52,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:52,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:52,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:52,916 INFO L87 Difference]: Start difference. First operand 1284 states and 3492 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:53,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:53,078 INFO L93 Difference]: Finished difference Result 1451 states and 3899 transitions. [2021-06-05 13:12:53,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:53,078 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:53,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:53,080 INFO L225 Difference]: With dead ends: 1451 [2021-06-05 13:12:53,080 INFO L226 Difference]: Without dead ends: 1310 [2021-06-05 13:12:53,080 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:53,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-06-05 13:12:53,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1258. [2021-06-05 13:12:53,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 2.720763723150358) internal successors, (3420), 1257 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:53,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 3420 transitions. [2021-06-05 13:12:53,092 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 3420 transitions. Word has length 26 [2021-06-05 13:12:53,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:53,093 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 3420 transitions. [2021-06-05 13:12:53,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:53,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 3420 transitions. [2021-06-05 13:12:53,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:53,094 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:53,094 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:53,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-06-05 13:12:53,094 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:53,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:53,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1221048170, now seen corresponding path program 247 times [2021-06-05 13:12:53,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:53,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463857983] [2021-06-05 13:12:53,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:53,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:53,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:53,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463857983] [2021-06-05 13:12:53,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463857983] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:53,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:53,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:53,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119602023] [2021-06-05 13:12:53,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:53,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:53,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:53,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:53,154 INFO L87 Difference]: Start difference. First operand 1258 states and 3420 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:53,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:53,320 INFO L93 Difference]: Finished difference Result 1416 states and 3802 transitions. [2021-06-05 13:12:53,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:53,321 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:53,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:53,322 INFO L225 Difference]: With dead ends: 1416 [2021-06-05 13:12:53,322 INFO L226 Difference]: Without dead ends: 1335 [2021-06-05 13:12:53,323 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:53,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-06-05 13:12:53,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1260. [2021-06-05 13:12:53,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1259 states have (on average 2.722001588562351) internal successors, (3427), 1259 states have internal predecessors, (3427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:53,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 3427 transitions. [2021-06-05 13:12:53,335 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 3427 transitions. Word has length 26 [2021-06-05 13:12:53,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:53,335 INFO L482 AbstractCegarLoop]: Abstraction has 1260 states and 3427 transitions. [2021-06-05 13:12:53,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:53,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 3427 transitions. [2021-06-05 13:12:53,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:53,336 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:53,336 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:53,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-06-05 13:12:53,336 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:53,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:53,336 INFO L82 PathProgramCache]: Analyzing trace with hash -351603562, now seen corresponding path program 248 times [2021-06-05 13:12:53,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:53,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849895442] [2021-06-05 13:12:53,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:53,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:53,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:53,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849895442] [2021-06-05 13:12:53,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849895442] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:53,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:53,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:53,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651495018] [2021-06-05 13:12:53,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:53,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:53,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:53,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:53,395 INFO L87 Difference]: Start difference. First operand 1260 states and 3427 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:53,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:53,563 INFO L93 Difference]: Finished difference Result 1422 states and 3809 transitions. [2021-06-05 13:12:53,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:53,564 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:53,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:53,565 INFO L225 Difference]: With dead ends: 1422 [2021-06-05 13:12:53,565 INFO L226 Difference]: Without dead ends: 1302 [2021-06-05 13:12:53,565 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:53,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2021-06-05 13:12:53,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1256. [2021-06-05 13:12:53,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 1255 states have (on average 2.7203187250996015) internal successors, (3414), 1255 states have internal predecessors, (3414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:53,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 3414 transitions. [2021-06-05 13:12:53,577 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 3414 transitions. Word has length 26 [2021-06-05 13:12:53,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:53,577 INFO L482 AbstractCegarLoop]: Abstraction has 1256 states and 3414 transitions. [2021-06-05 13:12:53,577 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:53,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 3414 transitions. [2021-06-05 13:12:53,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:53,579 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:53,579 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:53,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-06-05 13:12:53,579 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:53,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:53,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1820314792, now seen corresponding path program 249 times [2021-06-05 13:12:53,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:53,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52841347] [2021-06-05 13:12:53,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:53,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:53,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:53,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52841347] [2021-06-05 13:12:53,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52841347] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:53,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:53,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:53,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907297800] [2021-06-05 13:12:53,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:53,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:53,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:53,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:53,637 INFO L87 Difference]: Start difference. First operand 1256 states and 3414 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:53,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:53,803 INFO L93 Difference]: Finished difference Result 1383 states and 3716 transitions. [2021-06-05 13:12:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:53,803 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:53,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:53,805 INFO L225 Difference]: With dead ends: 1383 [2021-06-05 13:12:53,805 INFO L226 Difference]: Without dead ends: 1292 [2021-06-05 13:12:53,805 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-06-05 13:12:53,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1244. [2021-06-05 13:12:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1243 states have (on average 2.7280772325020113) internal successors, (3391), 1243 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3391 transitions. [2021-06-05 13:12:53,817 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3391 transitions. Word has length 26 [2021-06-05 13:12:53,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:53,817 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3391 transitions. [2021-06-05 13:12:53,817 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:53,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3391 transitions. [2021-06-05 13:12:53,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:53,818 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:53,818 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:53,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-06-05 13:12:53,818 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:53,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:53,818 INFO L82 PathProgramCache]: Analyzing trace with hash -413150982, now seen corresponding path program 250 times [2021-06-05 13:12:53,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:53,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557321181] [2021-06-05 13:12:53,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:53,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:53,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:53,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557321181] [2021-06-05 13:12:53,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557321181] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:53,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:53,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:53,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182131241] [2021-06-05 13:12:53,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:53,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:53,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:53,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:53,868 INFO L87 Difference]: Start difference. First operand 1244 states and 3391 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:53,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:53,998 INFO L93 Difference]: Finished difference Result 1483 states and 4005 transitions. [2021-06-05 13:12:53,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:53,999 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:53,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:54,000 INFO L225 Difference]: With dead ends: 1483 [2021-06-05 13:12:54,000 INFO L226 Difference]: Without dead ends: 1331 [2021-06-05 13:12:54,000 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:54,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2021-06-05 13:12:54,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1273. [2021-06-05 13:12:54,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1272 states have (on average 2.7114779874213837) internal successors, (3449), 1272 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:54,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 3449 transitions. [2021-06-05 13:12:54,013 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 3449 transitions. Word has length 26 [2021-06-05 13:12:54,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:54,013 INFO L482 AbstractCegarLoop]: Abstraction has 1273 states and 3449 transitions. [2021-06-05 13:12:54,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:54,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 3449 transitions. [2021-06-05 13:12:54,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:54,014 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:54,014 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:54,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-06-05 13:12:54,014 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:54,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:54,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1272735976, now seen corresponding path program 251 times [2021-06-05 13:12:54,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:54,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104111464] [2021-06-05 13:12:54,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:54,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:54,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104111464] [2021-06-05 13:12:54,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104111464] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:54,088 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:54,088 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:54,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527166054] [2021-06-05 13:12:54,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:54,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:54,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:54,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:54,088 INFO L87 Difference]: Start difference. First operand 1273 states and 3449 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:54,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:54,253 INFO L93 Difference]: Finished difference Result 1455 states and 3899 transitions. [2021-06-05 13:12:54,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:54,253 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:54,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:54,255 INFO L225 Difference]: With dead ends: 1455 [2021-06-05 13:12:54,255 INFO L226 Difference]: Without dead ends: 1330 [2021-06-05 13:12:54,255 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:54,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-06-05 13:12:54,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1247. [2021-06-05 13:12:54,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1246 states have (on average 2.718298555377207) internal successors, (3387), 1246 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:54,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3387 transitions. [2021-06-05 13:12:54,267 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3387 transitions. Word has length 26 [2021-06-05 13:12:54,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:54,267 INFO L482 AbstractCegarLoop]: Abstraction has 1247 states and 3387 transitions. [2021-06-05 13:12:54,267 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:54,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3387 transitions. [2021-06-05 13:12:54,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:54,269 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:54,269 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:54,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-06-05 13:12:54,269 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:54,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:54,269 INFO L82 PathProgramCache]: Analyzing trace with hash -630959526, now seen corresponding path program 252 times [2021-06-05 13:12:54,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:54,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740624183] [2021-06-05 13:12:54,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:54,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:54,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:54,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740624183] [2021-06-05 13:12:54,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740624183] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:54,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:54,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:54,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767436878] [2021-06-05 13:12:54,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:54,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:54,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:54,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:54,333 INFO L87 Difference]: Start difference. First operand 1247 states and 3387 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:54,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:54,508 INFO L93 Difference]: Finished difference Result 1414 states and 3792 transitions. [2021-06-05 13:12:54,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:54,508 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:54,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:54,509 INFO L225 Difference]: With dead ends: 1414 [2021-06-05 13:12:54,509 INFO L226 Difference]: Without dead ends: 1315 [2021-06-05 13:12:54,510 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:54,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2021-06-05 13:12:54,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1253. [2021-06-05 13:12:54,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 1252 states have (on average 2.713258785942492) internal successors, (3397), 1252 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:54,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 3397 transitions. [2021-06-05 13:12:54,522 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 3397 transitions. Word has length 26 [2021-06-05 13:12:54,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:54,522 INFO L482 AbstractCegarLoop]: Abstraction has 1253 states and 3397 transitions. [2021-06-05 13:12:54,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:54,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 3397 transitions. [2021-06-05 13:12:54,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:54,523 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:54,523 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:54,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-06-05 13:12:54,523 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:54,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:54,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1539210662, now seen corresponding path program 253 times [2021-06-05 13:12:54,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:54,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970221552] [2021-06-05 13:12:54,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:54,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:54,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:54,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970221552] [2021-06-05 13:12:54,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970221552] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:54,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:54,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:54,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286222881] [2021-06-05 13:12:54,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:54,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:54,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:54,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:54,585 INFO L87 Difference]: Start difference. First operand 1253 states and 3397 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:54,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:54,750 INFO L93 Difference]: Finished difference Result 1410 states and 3784 transitions. [2021-06-05 13:12:54,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:54,751 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:54,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:54,752 INFO L225 Difference]: With dead ends: 1410 [2021-06-05 13:12:54,753 INFO L226 Difference]: Without dead ends: 1329 [2021-06-05 13:12:54,753 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:54,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-05 13:12:54,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1256. [2021-06-05 13:12:54,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 1255 states have (on average 2.7155378486055777) internal successors, (3408), 1255 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:54,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 3408 transitions. [2021-06-05 13:12:54,765 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 3408 transitions. Word has length 26 [2021-06-05 13:12:54,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:54,765 INFO L482 AbstractCegarLoop]: Abstraction has 1256 states and 3408 transitions. [2021-06-05 13:12:54,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:54,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 3408 transitions. [2021-06-05 13:12:54,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:54,767 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:54,767 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:54,767 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-06-05 13:12:54,767 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:54,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:54,768 INFO L82 PathProgramCache]: Analyzing trace with hash -669766054, now seen corresponding path program 254 times [2021-06-05 13:12:54,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:54,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608489809] [2021-06-05 13:12:54,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:54,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:54,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:54,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608489809] [2021-06-05 13:12:54,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608489809] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:54,833 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:54,833 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:54,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791201326] [2021-06-05 13:12:54,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:54,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:54,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:54,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:54,834 INFO L87 Difference]: Start difference. First operand 1256 states and 3408 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:55,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:55,005 INFO L93 Difference]: Finished difference Result 1435 states and 3835 transitions. [2021-06-05 13:12:55,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:55,006 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:55,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:55,009 INFO L225 Difference]: With dead ends: 1435 [2021-06-05 13:12:55,009 INFO L226 Difference]: Without dead ends: 1329 [2021-06-05 13:12:55,009 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:55,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-05 13:12:55,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1253. [2021-06-05 13:12:55,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 1252 states have (on average 2.713258785942492) internal successors, (3397), 1252 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:55,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 3397 transitions. [2021-06-05 13:12:55,026 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 3397 transitions. Word has length 26 [2021-06-05 13:12:55,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:55,026 INFO L482 AbstractCegarLoop]: Abstraction has 1253 states and 3397 transitions. [2021-06-05 13:12:55,026 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:55,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 3397 transitions. [2021-06-05 13:12:55,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:55,027 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:55,027 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:55,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-06-05 13:12:55,027 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:55,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:55,028 INFO L82 PathProgramCache]: Analyzing trace with hash -618634696, now seen corresponding path program 255 times [2021-06-05 13:12:55,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:55,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119027625] [2021-06-05 13:12:55,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:55,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:55,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119027625] [2021-06-05 13:12:55,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119027625] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:55,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:55,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:55,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712008398] [2021-06-05 13:12:55,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:55,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:55,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:55,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:55,107 INFO L87 Difference]: Start difference. First operand 1253 states and 3397 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:55,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:55,272 INFO L93 Difference]: Finished difference Result 1387 states and 3720 transitions. [2021-06-05 13:12:55,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:55,272 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:55,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:55,274 INFO L225 Difference]: With dead ends: 1387 [2021-06-05 13:12:55,274 INFO L226 Difference]: Without dead ends: 1291 [2021-06-05 13:12:55,274 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:55,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-06-05 13:12:55,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1238. [2021-06-05 13:12:55,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 2.719482619240097) internal successors, (3364), 1237 states have internal predecessors, (3364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:55,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3364 transitions. [2021-06-05 13:12:55,286 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3364 transitions. Word has length 26 [2021-06-05 13:12:55,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:55,286 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 3364 transitions. [2021-06-05 13:12:55,286 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:55,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3364 transitions. [2021-06-05 13:12:55,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:55,287 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:55,288 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:55,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-06-05 13:12:55,288 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:55,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:55,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1127571916, now seen corresponding path program 256 times [2021-06-05 13:12:55,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:55,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79088657] [2021-06-05 13:12:55,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:55,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:55,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:55,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79088657] [2021-06-05 13:12:55,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79088657] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:55,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:55,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:55,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125916467] [2021-06-05 13:12:55,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:55,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:55,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:55,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:55,348 INFO L87 Difference]: Start difference. First operand 1238 states and 3364 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:55,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:55,480 INFO L93 Difference]: Finished difference Result 1442 states and 3911 transitions. [2021-06-05 13:12:55,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:55,481 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:55,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:55,482 INFO L225 Difference]: With dead ends: 1442 [2021-06-05 13:12:55,482 INFO L226 Difference]: Without dead ends: 1357 [2021-06-05 13:12:55,482 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:55,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2021-06-05 13:12:55,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1252. [2021-06-05 13:12:55,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 2.7194244604316546) internal successors, (3402), 1251 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:55,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3402 transitions. [2021-06-05 13:12:55,495 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3402 transitions. Word has length 26 [2021-06-05 13:12:55,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:55,495 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3402 transitions. [2021-06-05 13:12:55,495 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:55,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3402 transitions. [2021-06-05 13:12:55,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:55,496 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:55,496 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:55,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-06-05 13:12:55,496 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:55,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:55,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1598466838, now seen corresponding path program 257 times [2021-06-05 13:12:55,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:55,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840307276] [2021-06-05 13:12:55,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:55,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:55,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:55,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840307276] [2021-06-05 13:12:55,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840307276] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:55,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:55,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:55,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748312121] [2021-06-05 13:12:55,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:55,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:55,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:55,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:55,548 INFO L87 Difference]: Start difference. First operand 1252 states and 3402 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:55,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:55,689 INFO L93 Difference]: Finished difference Result 1475 states and 4004 transitions. [2021-06-05 13:12:55,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:55,689 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:55,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:55,691 INFO L225 Difference]: With dead ends: 1475 [2021-06-05 13:12:55,691 INFO L226 Difference]: Without dead ends: 1382 [2021-06-05 13:12:55,691 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:55,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-06-05 13:12:55,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1238. [2021-06-05 13:12:55,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 2.7178658043654003) internal successors, (3362), 1237 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:55,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3362 transitions. [2021-06-05 13:12:55,703 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3362 transitions. Word has length 26 [2021-06-05 13:12:55,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:55,703 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 3362 transitions. [2021-06-05 13:12:55,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:55,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3362 transitions. [2021-06-05 13:12:55,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:55,705 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:55,705 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:55,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-06-05 13:12:55,705 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:55,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:55,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1852151958, now seen corresponding path program 258 times [2021-06-05 13:12:55,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:55,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857059141] [2021-06-05 13:12:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:55,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:55,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857059141] [2021-06-05 13:12:55,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857059141] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:55,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:55,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:55,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081200745] [2021-06-05 13:12:55,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:55,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:55,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:55,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:55,765 INFO L87 Difference]: Start difference. First operand 1238 states and 3362 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:55,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:55,935 INFO L93 Difference]: Finished difference Result 1375 states and 3707 transitions. [2021-06-05 13:12:55,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:55,935 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:55,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:55,937 INFO L225 Difference]: With dead ends: 1375 [2021-06-05 13:12:55,937 INFO L226 Difference]: Without dead ends: 1294 [2021-06-05 13:12:55,937 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:55,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-06-05 13:12:55,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1242. [2021-06-05 13:12:55,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1241 states have (on average 2.721192586623691) internal successors, (3377), 1241 states have internal predecessors, (3377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:55,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 3377 transitions. [2021-06-05 13:12:55,949 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 3377 transitions. Word has length 26 [2021-06-05 13:12:55,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:55,949 INFO L482 AbstractCegarLoop]: Abstraction has 1242 states and 3377 transitions. [2021-06-05 13:12:55,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:55,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 3377 transitions. [2021-06-05 13:12:55,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:55,950 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:55,950 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:55,950 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-06-05 13:12:55,950 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:55,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:55,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1573370730, now seen corresponding path program 259 times [2021-06-05 13:12:55,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:55,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433066515] [2021-06-05 13:12:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:56,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:56,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433066515] [2021-06-05 13:12:56,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433066515] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:56,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:56,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:56,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742209687] [2021-06-05 13:12:56,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:56,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:56,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:56,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:56,012 INFO L87 Difference]: Start difference. First operand 1242 states and 3377 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:56,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:56,181 INFO L93 Difference]: Finished difference Result 1385 states and 3725 transitions. [2021-06-05 13:12:56,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:56,181 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:56,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:56,182 INFO L225 Difference]: With dead ends: 1385 [2021-06-05 13:12:56,182 INFO L226 Difference]: Without dead ends: 1288 [2021-06-05 13:12:56,183 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:56,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2021-06-05 13:12:56,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1243. [2021-06-05 13:12:56,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1242 states have (on average 2.7206119162640903) internal successors, (3379), 1242 states have internal predecessors, (3379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:56,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 3379 transitions. [2021-06-05 13:12:56,194 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 3379 transitions. Word has length 26 [2021-06-05 13:12:56,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:56,195 INFO L482 AbstractCegarLoop]: Abstraction has 1243 states and 3379 transitions. [2021-06-05 13:12:56,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:56,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 3379 transitions. [2021-06-05 13:12:56,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:56,196 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:56,196 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:56,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-06-05 13:12:56,196 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:56,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:56,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1252885336, now seen corresponding path program 260 times [2021-06-05 13:12:56,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:56,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604973824] [2021-06-05 13:12:56,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:56,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:56,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:56,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604973824] [2021-06-05 13:12:56,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604973824] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:56,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:56,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:56,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411002405] [2021-06-05 13:12:56,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:56,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:56,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:56,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:56,257 INFO L87 Difference]: Start difference. First operand 1243 states and 3379 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:56,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:56,428 INFO L93 Difference]: Finished difference Result 1363 states and 3672 transitions. [2021-06-05 13:12:56,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:56,428 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:56,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:56,429 INFO L225 Difference]: With dead ends: 1363 [2021-06-05 13:12:56,429 INFO L226 Difference]: Without dead ends: 1274 [2021-06-05 13:12:56,430 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:56,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-06-05 13:12:56,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1247. [2021-06-05 13:12:56,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1246 states have (on average 2.720706260032103) internal successors, (3390), 1246 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:56,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3390 transitions. [2021-06-05 13:12:56,442 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3390 transitions. Word has length 26 [2021-06-05 13:12:56,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:56,442 INFO L482 AbstractCegarLoop]: Abstraction has 1247 states and 3390 transitions. [2021-06-05 13:12:56,442 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:56,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3390 transitions. [2021-06-05 13:12:56,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:56,443 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:56,443 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:56,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-06-05 13:12:56,443 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:56,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:56,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1266038908, now seen corresponding path program 261 times [2021-06-05 13:12:56,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:56,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188103456] [2021-06-05 13:12:56,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:56,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:56,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:56,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188103456] [2021-06-05 13:12:56,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188103456] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:56,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:56,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:56,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132225072] [2021-06-05 13:12:56,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:56,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:56,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:56,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:56,503 INFO L87 Difference]: Start difference. First operand 1247 states and 3390 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:56,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:56,676 INFO L93 Difference]: Finished difference Result 1378 states and 3704 transitions. [2021-06-05 13:12:56,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:56,676 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:56,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:56,678 INFO L225 Difference]: With dead ends: 1378 [2021-06-05 13:12:56,678 INFO L226 Difference]: Without dead ends: 1269 [2021-06-05 13:12:56,678 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:56,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2021-06-05 13:12:56,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1243. [2021-06-05 13:12:56,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1242 states have (on average 2.718196457326892) internal successors, (3376), 1242 states have internal predecessors, (3376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:56,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 3376 transitions. [2021-06-05 13:12:56,690 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 3376 transitions. Word has length 26 [2021-06-05 13:12:56,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:56,690 INFO L482 AbstractCegarLoop]: Abstraction has 1243 states and 3376 transitions. [2021-06-05 13:12:56,690 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:56,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 3376 transitions. [2021-06-05 13:12:56,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:56,691 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:56,691 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:56,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-06-05 13:12:56,691 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:56,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:56,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1645343992, now seen corresponding path program 262 times [2021-06-05 13:12:56,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:56,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640488841] [2021-06-05 13:12:56,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:56,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:56,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640488841] [2021-06-05 13:12:56,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640488841] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:56,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:56,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:56,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054277644] [2021-06-05 13:12:56,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:56,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:56,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:56,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:56,751 INFO L87 Difference]: Start difference. First operand 1243 states and 3376 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:56,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:56,920 INFO L93 Difference]: Finished difference Result 1384 states and 3725 transitions. [2021-06-05 13:12:56,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:56,921 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:56,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:56,922 INFO L225 Difference]: With dead ends: 1384 [2021-06-05 13:12:56,922 INFO L226 Difference]: Without dead ends: 1303 [2021-06-05 13:12:56,923 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:56,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-06-05 13:12:56,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1245. [2021-06-05 13:12:56,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1244 states have (on average 2.719453376205788) internal successors, (3383), 1244 states have internal predecessors, (3383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3383 transitions. [2021-06-05 13:12:56,935 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3383 transitions. Word has length 26 [2021-06-05 13:12:56,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:56,935 INFO L482 AbstractCegarLoop]: Abstraction has 1245 states and 3383 transitions. [2021-06-05 13:12:56,935 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:56,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3383 transitions. [2021-06-05 13:12:56,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:56,936 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:56,936 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:56,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-06-05 13:12:56,936 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:56,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:56,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1780178696, now seen corresponding path program 263 times [2021-06-05 13:12:56,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:56,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220321200] [2021-06-05 13:12:56,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:57,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:57,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220321200] [2021-06-05 13:12:57,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220321200] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:57,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:57,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:57,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126149775] [2021-06-05 13:12:57,005 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:57,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:57,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:57,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:57,005 INFO L87 Difference]: Start difference. First operand 1245 states and 3383 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:57,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:57,174 INFO L93 Difference]: Finished difference Result 1389 states and 3727 transitions. [2021-06-05 13:12:57,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:57,174 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:57,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:57,176 INFO L225 Difference]: With dead ends: 1389 [2021-06-05 13:12:57,176 INFO L226 Difference]: Without dead ends: 1292 [2021-06-05 13:12:57,176 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:57,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-06-05 13:12:57,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1241. [2021-06-05 13:12:57,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 1240 states have (on average 2.7161290322580647) internal successors, (3368), 1240 states have internal predecessors, (3368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:57,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 3368 transitions. [2021-06-05 13:12:57,188 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 3368 transitions. Word has length 26 [2021-06-05 13:12:57,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:57,188 INFO L482 AbstractCegarLoop]: Abstraction has 1241 states and 3368 transitions. [2021-06-05 13:12:57,188 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:57,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 3368 transitions. [2021-06-05 13:12:57,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:57,190 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:57,190 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:57,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-06-05 13:12:57,190 INFO L430 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:57,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:57,190 INFO L82 PathProgramCache]: Analyzing trace with hash 140505174, now seen corresponding path program 264 times [2021-06-05 13:12:57,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:57,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862784979] [2021-06-05 13:12:57,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:57,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:57,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:57,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862784979] [2021-06-05 13:12:57,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862784979] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:57,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:57,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:57,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529452605] [2021-06-05 13:12:57,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:57,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:57,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:57,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:57,252 INFO L87 Difference]: Start difference. First operand 1241 states and 3368 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:57,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:57,421 INFO L93 Difference]: Finished difference Result 1366 states and 3673 transitions. [2021-06-05 13:12:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:57,422 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:57,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:57,423 INFO L225 Difference]: With dead ends: 1366 [2021-06-05 13:12:57,423 INFO L226 Difference]: Without dead ends: 1279 [2021-06-05 13:12:57,423 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:57,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2021-06-05 13:12:57,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1242. [2021-06-05 13:12:57,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1241 states have (on average 2.7147461724415796) internal successors, (3369), 1241 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:57,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 3369 transitions. [2021-06-05 13:12:57,435 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 3369 transitions. Word has length 26 [2021-06-05 13:12:57,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:57,435 INFO L482 AbstractCegarLoop]: Abstraction has 1242 states and 3369 transitions. [2021-06-05 13:12:57,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:57,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 3369 transitions. [2021-06-05 13:12:57,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:57,437 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:57,437 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:57,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-06-05 13:12:57,437 INFO L430 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:57,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:57,437 INFO L82 PathProgramCache]: Analyzing trace with hash -2034524430, now seen corresponding path program 265 times [2021-06-05 13:12:57,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:57,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964804204] [2021-06-05 13:12:57,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:57,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:57,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:57,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964804204] [2021-06-05 13:12:57,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964804204] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:57,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:57,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:57,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184733900] [2021-06-05 13:12:57,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:57,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:57,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:57,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:57,497 INFO L87 Difference]: Start difference. First operand 1242 states and 3369 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:57,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:57,667 INFO L93 Difference]: Finished difference Result 1386 states and 3719 transitions. [2021-06-05 13:12:57,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:57,667 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:57,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:57,669 INFO L225 Difference]: With dead ends: 1386 [2021-06-05 13:12:57,669 INFO L226 Difference]: Without dead ends: 1281 [2021-06-05 13:12:57,669 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:57,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-06-05 13:12:57,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1236. [2021-06-05 13:12:57,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 2.7157894736842105) internal successors, (3354), 1235 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:57,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 3354 transitions. [2021-06-05 13:12:57,681 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 3354 transitions. Word has length 26 [2021-06-05 13:12:57,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:57,681 INFO L482 AbstractCegarLoop]: Abstraction has 1236 states and 3354 transitions. [2021-06-05 13:12:57,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:57,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 3354 transitions. [2021-06-05 13:12:57,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:57,682 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:57,682 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:57,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-06-05 13:12:57,682 INFO L430 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:57,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:57,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1529663814, now seen corresponding path program 266 times [2021-06-05 13:12:57,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:57,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628990596] [2021-06-05 13:12:57,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:57,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:57,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:57,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628990596] [2021-06-05 13:12:57,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628990596] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:57,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:57,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:57,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009465458] [2021-06-05 13:12:57,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:57,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:57,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:57,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:57,742 INFO L87 Difference]: Start difference. First operand 1236 states and 3354 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:57,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:57,910 INFO L93 Difference]: Finished difference Result 1442 states and 3908 transitions. [2021-06-05 13:12:57,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:57,910 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:57,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:57,912 INFO L225 Difference]: With dead ends: 1442 [2021-06-05 13:12:57,912 INFO L226 Difference]: Without dead ends: 1351 [2021-06-05 13:12:57,912 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:57,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-06-05 13:12:57,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1238. [2021-06-05 13:12:57,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 2.7130153597413096) internal successors, (3356), 1237 states have internal predecessors, (3356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:57,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3356 transitions. [2021-06-05 13:12:57,924 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3356 transitions. Word has length 26 [2021-06-05 13:12:57,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:57,924 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 3356 transitions. [2021-06-05 13:12:57,924 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:57,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3356 transitions. [2021-06-05 13:12:57,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:57,925 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:57,925 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:57,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-06-05 13:12:57,926 INFO L430 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:57,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:57,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1373158936, now seen corresponding path program 267 times [2021-06-05 13:12:57,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:57,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639293432] [2021-06-05 13:12:57,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:57,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:57,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:57,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639293432] [2021-06-05 13:12:57,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639293432] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:57,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:57,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:57,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533391309] [2021-06-05 13:12:57,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:57,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:57,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:57,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:57,986 INFO L87 Difference]: Start difference. First operand 1238 states and 3356 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:58,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:58,151 INFO L93 Difference]: Finished difference Result 1473 states and 3992 transitions. [2021-06-05 13:12:58,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:58,151 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:58,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:58,153 INFO L225 Difference]: With dead ends: 1473 [2021-06-05 13:12:58,153 INFO L226 Difference]: Without dead ends: 1381 [2021-06-05 13:12:58,153 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:58,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2021-06-05 13:12:58,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1234. [2021-06-05 13:12:58,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 2.710462287104623) internal successors, (3342), 1233 states have internal predecessors, (3342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:58,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3342 transitions. [2021-06-05 13:12:58,165 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3342 transitions. Word has length 26 [2021-06-05 13:12:58,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:58,165 INFO L482 AbstractCegarLoop]: Abstraction has 1234 states and 3342 transitions. [2021-06-05 13:12:58,165 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:58,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3342 transitions. [2021-06-05 13:12:58,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:58,166 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:58,166 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:58,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-06-05 13:12:58,166 INFO L430 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:58,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:58,167 INFO L82 PathProgramCache]: Analyzing trace with hash 998145596, now seen corresponding path program 268 times [2021-06-05 13:12:58,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:58,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105537708] [2021-06-05 13:12:58,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:58,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:58,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:58,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105537708] [2021-06-05 13:12:58,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105537708] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:58,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:58,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:58,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708112770] [2021-06-05 13:12:58,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:58,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:58,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:58,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:58,235 INFO L87 Difference]: Start difference. First operand 1234 states and 3342 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:58,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:58,371 INFO L93 Difference]: Finished difference Result 1450 states and 3914 transitions. [2021-06-05 13:12:58,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:58,371 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:58,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:58,373 INFO L225 Difference]: With dead ends: 1450 [2021-06-05 13:12:58,373 INFO L226 Difference]: Without dead ends: 1359 [2021-06-05 13:12:58,373 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:58,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2021-06-05 13:12:58,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1260. [2021-06-05 13:12:58,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1259 states have (on average 2.711675933280381) internal successors, (3414), 1259 states have internal predecessors, (3414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:58,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 3414 transitions. [2021-06-05 13:12:58,386 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 3414 transitions. Word has length 26 [2021-06-05 13:12:58,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:58,386 INFO L482 AbstractCegarLoop]: Abstraction has 1260 states and 3414 transitions. [2021-06-05 13:12:58,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:58,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 3414 transitions. [2021-06-05 13:12:58,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:58,387 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:58,387 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:58,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-06-05 13:12:58,387 INFO L430 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:58,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:58,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1867590204, now seen corresponding path program 269 times [2021-06-05 13:12:58,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:58,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981515808] [2021-06-05 13:12:58,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:58,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:58,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981515808] [2021-06-05 13:12:58,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981515808] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:58,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:58,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:58,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502171423] [2021-06-05 13:12:58,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:58,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:58,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:58,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:58,464 INFO L87 Difference]: Start difference. First operand 1260 states and 3414 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:58,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:58,624 INFO L93 Difference]: Finished difference Result 1501 states and 4029 transitions. [2021-06-05 13:12:58,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:58,625 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:58,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:58,626 INFO L225 Difference]: With dead ends: 1501 [2021-06-05 13:12:58,626 INFO L226 Difference]: Without dead ends: 1304 [2021-06-05 13:12:58,626 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:58,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-06-05 13:12:58,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1244. [2021-06-05 13:12:58,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1243 states have (on average 2.6942880128720836) internal successors, (3349), 1243 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:58,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3349 transitions. [2021-06-05 13:12:58,639 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3349 transitions. Word has length 26 [2021-06-05 13:12:58,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:58,639 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3349 transitions. [2021-06-05 13:12:58,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:58,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3349 transitions. [2021-06-05 13:12:58,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:58,640 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:58,640 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:58,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-06-05 13:12:58,640 INFO L430 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:58,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:58,640 INFO L82 PathProgramCache]: Analyzing trace with hash -719595174, now seen corresponding path program 270 times [2021-06-05 13:12:58,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:58,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910326931] [2021-06-05 13:12:58,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:58,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:58,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:58,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910326931] [2021-06-05 13:12:58,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910326931] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:58,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:58,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:58,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587868323] [2021-06-05 13:12:58,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:58,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:58,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:58,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:58,711 INFO L87 Difference]: Start difference. First operand 1244 states and 3349 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:58,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:58,875 INFO L93 Difference]: Finished difference Result 1399 states and 3720 transitions. [2021-06-05 13:12:58,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:58,875 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:58,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:58,877 INFO L225 Difference]: With dead ends: 1399 [2021-06-05 13:12:58,877 INFO L226 Difference]: Without dead ends: 1304 [2021-06-05 13:12:58,877 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:58,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-06-05 13:12:58,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1244. [2021-06-05 13:12:58,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1243 states have (on average 2.6942880128720836) internal successors, (3349), 1243 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:58,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3349 transitions. [2021-06-05 13:12:58,889 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3349 transitions. Word has length 26 [2021-06-05 13:12:58,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:58,889 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3349 transitions. [2021-06-05 13:12:58,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:58,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3349 transitions. [2021-06-05 13:12:58,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:58,890 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:58,890 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:58,890 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-06-05 13:12:58,891 INFO L430 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:58,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:58,891 INFO L82 PathProgramCache]: Analyzing trace with hash 149849434, now seen corresponding path program 271 times [2021-06-05 13:12:58,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:58,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134617226] [2021-06-05 13:12:58,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:58,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:58,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134617226] [2021-06-05 13:12:58,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134617226] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:58,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:58,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:58,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001703830] [2021-06-05 13:12:58,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:58,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:58,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:58,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:58,954 INFO L87 Difference]: Start difference. First operand 1244 states and 3349 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:59,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:59,123 INFO L93 Difference]: Finished difference Result 1389 states and 3693 transitions. [2021-06-05 13:12:59,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:59,124 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:59,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:59,125 INFO L225 Difference]: With dead ends: 1389 [2021-06-05 13:12:59,125 INFO L226 Difference]: Without dead ends: 1292 [2021-06-05 13:12:59,125 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:59,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-06-05 13:12:59,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1244. [2021-06-05 13:12:59,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1243 states have (on average 2.6926790024135157) internal successors, (3347), 1243 states have internal predecessors, (3347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:59,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3347 transitions. [2021-06-05 13:12:59,137 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3347 transitions. Word has length 26 [2021-06-05 13:12:59,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:59,138 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3347 transitions. [2021-06-05 13:12:59,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:59,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3347 transitions. [2021-06-05 13:12:59,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:59,139 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:59,139 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:59,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-06-05 13:12:59,139 INFO L430 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:59,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:59,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1305708224, now seen corresponding path program 272 times [2021-06-05 13:12:59,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:59,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930387708] [2021-06-05 13:12:59,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:59,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:59,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:59,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930387708] [2021-06-05 13:12:59,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930387708] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:59,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:59,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:59,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602440098] [2021-06-05 13:12:59,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:59,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:59,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:59,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:59,210 INFO L87 Difference]: Start difference. First operand 1244 states and 3347 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:59,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:59,378 INFO L93 Difference]: Finished difference Result 1371 states and 3646 transitions. [2021-06-05 13:12:59,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:59,379 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:59,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:59,380 INFO L225 Difference]: With dead ends: 1371 [2021-06-05 13:12:59,380 INFO L226 Difference]: Without dead ends: 1266 [2021-06-05 13:12:59,380 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:59,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2021-06-05 13:12:59,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1232. [2021-06-05 13:12:59,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1231 states have (on average 2.6994313566206336) internal successors, (3323), 1231 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:59,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3323 transitions. [2021-06-05 13:12:59,392 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3323 transitions. Word has length 26 [2021-06-05 13:12:59,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:59,392 INFO L482 AbstractCegarLoop]: Abstraction has 1232 states and 3323 transitions. [2021-06-05 13:12:59,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:59,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3323 transitions. [2021-06-05 13:12:59,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:59,394 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:59,394 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:59,394 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-06-05 13:12:59,394 INFO L430 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:59,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:59,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1117934054, now seen corresponding path program 273 times [2021-06-05 13:12:59,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:59,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606988530] [2021-06-05 13:12:59,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:59,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:59,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606988530] [2021-06-05 13:12:59,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606988530] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:59,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:59,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:12:59,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401868644] [2021-06-05 13:12:59,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:12:59,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:59,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:12:59,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:59,446 INFO L87 Difference]: Start difference. First operand 1232 states and 3323 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:59,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:59,580 INFO L93 Difference]: Finished difference Result 1470 states and 3952 transitions. [2021-06-05 13:12:59,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:12:59,580 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:59,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:59,582 INFO L225 Difference]: With dead ends: 1470 [2021-06-05 13:12:59,582 INFO L226 Difference]: Without dead ends: 1389 [2021-06-05 13:12:59,582 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:12:59,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2021-06-05 13:12:59,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1270. [2021-06-05 13:12:59,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 2.702915681639086) internal successors, (3430), 1269 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:59,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 3430 transitions. [2021-06-05 13:12:59,594 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 3430 transitions. Word has length 26 [2021-06-05 13:12:59,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:59,594 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 3430 transitions. [2021-06-05 13:12:59,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:59,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 3430 transitions. [2021-06-05 13:12:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:59,596 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:59,596 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:59,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-06-05 13:12:59,596 INFO L430 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:59,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:59,596 INFO L82 PathProgramCache]: Analyzing trace with hash -248489446, now seen corresponding path program 274 times [2021-06-05 13:12:59,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:59,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904950188] [2021-06-05 13:12:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:59,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:59,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:59,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904950188] [2021-06-05 13:12:59,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904950188] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:59,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:59,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:59,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235667482] [2021-06-05 13:12:59,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:59,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:59,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:59,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:59,658 INFO L87 Difference]: Start difference. First operand 1270 states and 3430 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:59,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:59,826 INFO L93 Difference]: Finished difference Result 1525 states and 4077 transitions. [2021-06-05 13:12:59,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:12:59,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:12:59,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:59,827 INFO L225 Difference]: With dead ends: 1525 [2021-06-05 13:12:59,827 INFO L226 Difference]: Without dead ends: 1330 [2021-06-05 13:12:59,828 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:59,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-06-05 13:12:59,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1232. [2021-06-05 13:12:59,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1231 states have (on average 2.6896831844029245) internal successors, (3311), 1231 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:59,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3311 transitions. [2021-06-05 13:12:59,839 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3311 transitions. Word has length 26 [2021-06-05 13:12:59,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:59,840 INFO L482 AbstractCegarLoop]: Abstraction has 1232 states and 3311 transitions. [2021-06-05 13:12:59,840 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:12:59,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3311 transitions. [2021-06-05 13:12:59,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:12:59,841 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:59,841 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:59,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-06-05 13:12:59,841 INFO L430 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:59,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:59,841 INFO L82 PathProgramCache]: Analyzing trace with hash -236549542, now seen corresponding path program 275 times [2021-06-05 13:12:59,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:59,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652293558] [2021-06-05 13:12:59,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:59,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:59,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652293558] [2021-06-05 13:12:59,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652293558] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:59,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:59,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:12:59,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590493659] [2021-06-05 13:12:59,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:12:59,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:59,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:12:59,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:12:59,912 INFO L87 Difference]: Start difference. First operand 1232 states and 3311 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:00,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:00,081 INFO L93 Difference]: Finished difference Result 1421 states and 3771 transitions. [2021-06-05 13:13:00,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:00,081 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:00,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:00,082 INFO L225 Difference]: With dead ends: 1421 [2021-06-05 13:13:00,082 INFO L226 Difference]: Without dead ends: 1334 [2021-06-05 13:13:00,083 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:00,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-06-05 13:13:00,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1222. [2021-06-05 13:13:00,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 2.692055692055692) internal successors, (3287), 1221 states have internal predecessors, (3287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:00,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 3287 transitions. [2021-06-05 13:13:00,094 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 3287 transitions. Word has length 26 [2021-06-05 13:13:00,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:00,095 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 3287 transitions. [2021-06-05 13:13:00,095 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:00,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 3287 transitions. [2021-06-05 13:13:00,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:00,096 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:00,096 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:00,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-06-05 13:13:00,096 INFO L430 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:00,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:00,096 INFO L82 PathProgramCache]: Analyzing trace with hash 632895066, now seen corresponding path program 276 times [2021-06-05 13:13:00,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:00,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533222346] [2021-06-05 13:13:00,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:00,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:00,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:00,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533222346] [2021-06-05 13:13:00,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533222346] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:00,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:00,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:00,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337194473] [2021-06-05 13:13:00,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:00,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:00,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:00,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:00,157 INFO L87 Difference]: Start difference. First operand 1222 states and 3287 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:00,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:00,332 INFO L93 Difference]: Finished difference Result 1394 states and 3706 transitions. [2021-06-05 13:13:00,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:00,332 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:00,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:00,334 INFO L225 Difference]: With dead ends: 1394 [2021-06-05 13:13:00,334 INFO L226 Difference]: Without dead ends: 1297 [2021-06-05 13:13:00,334 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:00,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-06-05 13:13:00,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1237. [2021-06-05 13:13:00,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1236 states have (on average 2.6885113268608416) internal successors, (3323), 1236 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:00,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 3323 transitions. [2021-06-05 13:13:00,346 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 3323 transitions. Word has length 26 [2021-06-05 13:13:00,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:00,346 INFO L482 AbstractCegarLoop]: Abstraction has 1237 states and 3323 transitions. [2021-06-05 13:13:00,346 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:00,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 3323 transitions. [2021-06-05 13:13:00,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:00,347 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:00,347 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:00,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-06-05 13:13:00,347 INFO L430 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:00,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:00,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1445097654, now seen corresponding path program 277 times [2021-06-05 13:13:00,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:00,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739245661] [2021-06-05 13:13:00,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:00,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:00,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739245661] [2021-06-05 13:13:00,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739245661] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:00,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:00,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:00,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772103219] [2021-06-05 13:13:00,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:00,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:00,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:00,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:00,415 INFO L87 Difference]: Start difference. First operand 1237 states and 3323 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:00,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:00,589 INFO L93 Difference]: Finished difference Result 1383 states and 3684 transitions. [2021-06-05 13:13:00,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:00,589 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:00,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:00,590 INFO L225 Difference]: With dead ends: 1383 [2021-06-05 13:13:00,590 INFO L226 Difference]: Without dead ends: 1281 [2021-06-05 13:13:00,591 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:00,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-06-05 13:13:00,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1234. [2021-06-05 13:13:00,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 2.6885644768856447) internal successors, (3315), 1233 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:00,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3315 transitions. [2021-06-05 13:13:00,602 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3315 transitions. Word has length 26 [2021-06-05 13:13:00,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:00,603 INFO L482 AbstractCegarLoop]: Abstraction has 1234 states and 3315 transitions. [2021-06-05 13:13:00,603 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:00,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3315 transitions. [2021-06-05 13:13:00,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:00,604 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:00,604 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:00,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-06-05 13:13:00,604 INFO L430 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:00,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:00,604 INFO L82 PathProgramCache]: Analyzing trace with hash 415683934, now seen corresponding path program 278 times [2021-06-05 13:13:00,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:00,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672425480] [2021-06-05 13:13:00,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:00,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:00,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672425480] [2021-06-05 13:13:00,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672425480] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:00,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:00,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:00,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285815510] [2021-06-05 13:13:00,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:00,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:00,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:00,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:00,664 INFO L87 Difference]: Start difference. First operand 1234 states and 3315 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:00,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:00,826 INFO L93 Difference]: Finished difference Result 1413 states and 3754 transitions. [2021-06-05 13:13:00,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:00,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:00,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:00,828 INFO L225 Difference]: With dead ends: 1413 [2021-06-05 13:13:00,828 INFO L226 Difference]: Without dead ends: 1284 [2021-06-05 13:13:00,828 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:00,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2021-06-05 13:13:00,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1234. [2021-06-05 13:13:00,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 2.6853203568532034) internal successors, (3311), 1233 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:00,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3311 transitions. [2021-06-05 13:13:00,840 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3311 transitions. Word has length 26 [2021-06-05 13:13:00,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:00,840 INFO L482 AbstractCegarLoop]: Abstraction has 1234 states and 3311 transitions. [2021-06-05 13:13:00,840 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:00,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3311 transitions. [2021-06-05 13:13:00,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:00,841 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:00,841 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:00,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-06-05 13:13:00,841 INFO L430 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:00,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:00,842 INFO L82 PathProgramCache]: Analyzing trace with hash -444631560, now seen corresponding path program 279 times [2021-06-05 13:13:00,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:00,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161903631] [2021-06-05 13:13:00,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:00,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:00,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161903631] [2021-06-05 13:13:00,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161903631] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:00,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:00,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:00,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038696168] [2021-06-05 13:13:00,931 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:00,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:00,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:00,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:00,932 INFO L87 Difference]: Start difference. First operand 1234 states and 3311 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:01,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:01,106 INFO L93 Difference]: Finished difference Result 1364 states and 3627 transitions. [2021-06-05 13:13:01,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:01,106 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:01,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:01,107 INFO L225 Difference]: With dead ends: 1364 [2021-06-05 13:13:01,107 INFO L226 Difference]: Without dead ends: 1283 [2021-06-05 13:13:01,108 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:01,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-06-05 13:13:01,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1235. [2021-06-05 13:13:01,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1234 states have (on average 2.686385737439222) internal successors, (3315), 1234 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:01,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 3315 transitions. [2021-06-05 13:13:01,119 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 3315 transitions. Word has length 26 [2021-06-05 13:13:01,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:01,120 INFO L482 AbstractCegarLoop]: Abstraction has 1235 states and 3315 transitions. [2021-06-05 13:13:01,120 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:01,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 3315 transitions. [2021-06-05 13:13:01,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:01,121 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:01,121 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:01,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-06-05 13:13:01,121 INFO L430 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:01,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:01,121 INFO L82 PathProgramCache]: Analyzing trace with hash 424813048, now seen corresponding path program 280 times [2021-06-05 13:13:01,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:01,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067121758] [2021-06-05 13:13:01,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:01,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:01,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:01,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067121758] [2021-06-05 13:13:01,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067121758] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:01,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:01,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:01,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833706350] [2021-06-05 13:13:01,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:01,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:01,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:01,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:01,183 INFO L87 Difference]: Start difference. First operand 1235 states and 3315 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:01,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:01,355 INFO L93 Difference]: Finished difference Result 1374 states and 3654 transitions. [2021-06-05 13:13:01,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:01,355 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:01,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:01,357 INFO L225 Difference]: With dead ends: 1374 [2021-06-05 13:13:01,357 INFO L226 Difference]: Without dead ends: 1277 [2021-06-05 13:13:01,357 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:01,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2021-06-05 13:13:01,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1236. [2021-06-05 13:13:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 2.68582995951417) internal successors, (3317), 1235 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 3317 transitions. [2021-06-05 13:13:01,369 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 3317 transitions. Word has length 26 [2021-06-05 13:13:01,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:01,369 INFO L482 AbstractCegarLoop]: Abstraction has 1236 states and 3317 transitions. [2021-06-05 13:13:01,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:01,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 3317 transitions. [2021-06-05 13:13:01,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:01,370 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:01,370 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:01,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-06-05 13:13:01,370 INFO L430 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:01,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:01,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1043898182, now seen corresponding path program 281 times [2021-06-05 13:13:01,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:01,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165060715] [2021-06-05 13:13:01,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:01,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:01,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:01,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165060715] [2021-06-05 13:13:01,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165060715] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:01,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:01,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:01,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384770937] [2021-06-05 13:13:01,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:01,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:01,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:01,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:01,432 INFO L87 Difference]: Start difference. First operand 1236 states and 3317 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:01,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:01,606 INFO L93 Difference]: Finished difference Result 1361 states and 3614 transitions. [2021-06-05 13:13:01,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:01,606 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:01,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:01,608 INFO L225 Difference]: With dead ends: 1361 [2021-06-05 13:13:01,608 INFO L226 Difference]: Without dead ends: 1270 [2021-06-05 13:13:01,608 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:01,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-06-05 13:13:01,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1230. [2021-06-05 13:13:01,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1229 states have (on average 2.679414157851912) internal successors, (3293), 1229 states have internal predecessors, (3293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:01,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 3293 transitions. [2021-06-05 13:13:01,620 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 3293 transitions. Word has length 26 [2021-06-05 13:13:01,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:01,620 INFO L482 AbstractCegarLoop]: Abstraction has 1230 states and 3293 transitions. [2021-06-05 13:13:01,620 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:01,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 3293 transitions. [2021-06-05 13:13:01,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:01,621 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:01,621 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:01,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-06-05 13:13:01,621 INFO L430 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:01,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:01,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1030744610, now seen corresponding path program 282 times [2021-06-05 13:13:01,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:01,622 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523527397] [2021-06-05 13:13:01,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:01,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:01,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:01,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523527397] [2021-06-05 13:13:01,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523527397] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:01,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:01,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:01,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819173436] [2021-06-05 13:13:01,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:01,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:01,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:01,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:01,684 INFO L87 Difference]: Start difference. First operand 1230 states and 3293 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:01,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:01,851 INFO L93 Difference]: Finished difference Result 1343 states and 3570 transitions. [2021-06-05 13:13:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:01,851 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:01,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:01,853 INFO L225 Difference]: With dead ends: 1343 [2021-06-05 13:13:01,853 INFO L226 Difference]: Without dead ends: 1244 [2021-06-05 13:13:01,853 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:01,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2021-06-05 13:13:01,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1229. [2021-06-05 13:13:01,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1228 states have (on average 2.6807817589576546) internal successors, (3292), 1228 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:01,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 3292 transitions. [2021-06-05 13:13:01,864 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 3292 transitions. Word has length 26 [2021-06-05 13:13:01,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:01,864 INFO L482 AbstractCegarLoop]: Abstraction has 1229 states and 3292 transitions. [2021-06-05 13:13:01,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:01,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 3292 transitions. [2021-06-05 13:13:01,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:01,866 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:01,866 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:01,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-06-05 13:13:01,866 INFO L430 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:01,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:01,866 INFO L82 PathProgramCache]: Analyzing trace with hash -651439526, now seen corresponding path program 283 times [2021-06-05 13:13:01,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:01,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086364984] [2021-06-05 13:13:01,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:01,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:01,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:01,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086364984] [2021-06-05 13:13:01,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086364984] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:01,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:01,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:01,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063702798] [2021-06-05 13:13:01,924 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:01,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:01,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:01,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:01,924 INFO L87 Difference]: Start difference. First operand 1229 states and 3292 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:02,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:02,088 INFO L93 Difference]: Finished difference Result 1364 states and 3621 transitions. [2021-06-05 13:13:02,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:02,089 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:02,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:02,090 INFO L225 Difference]: With dead ends: 1364 [2021-06-05 13:13:02,090 INFO L226 Difference]: Without dead ends: 1283 [2021-06-05 13:13:02,090 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:02,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-06-05 13:13:02,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1229. [2021-06-05 13:13:02,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1228 states have (on average 2.682410423452769) internal successors, (3294), 1228 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:02,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 3294 transitions. [2021-06-05 13:13:02,102 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 3294 transitions. Word has length 26 [2021-06-05 13:13:02,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:02,102 INFO L482 AbstractCegarLoop]: Abstraction has 1229 states and 3294 transitions. [2021-06-05 13:13:02,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:02,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 3294 transitions. [2021-06-05 13:13:02,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:02,103 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:02,103 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:02,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-06-05 13:13:02,104 INFO L430 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:02,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:02,104 INFO L82 PathProgramCache]: Analyzing trace with hash 218005082, now seen corresponding path program 284 times [2021-06-05 13:13:02,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:02,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012571001] [2021-06-05 13:13:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:02,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:02,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012571001] [2021-06-05 13:13:02,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012571001] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:02,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:02,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:02,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120107444] [2021-06-05 13:13:02,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:02,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:02,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:02,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:02,182 INFO L87 Difference]: Start difference. First operand 1229 states and 3294 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:02,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:02,355 INFO L93 Difference]: Finished difference Result 1372 states and 3640 transitions. [2021-06-05 13:13:02,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:02,355 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:02,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:02,357 INFO L225 Difference]: With dead ends: 1372 [2021-06-05 13:13:02,357 INFO L226 Difference]: Without dead ends: 1275 [2021-06-05 13:13:02,357 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:02,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2021-06-05 13:13:02,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1228. [2021-06-05 13:13:02,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1227 states have (on average 2.6788916055419723) internal successors, (3287), 1227 states have internal predecessors, (3287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:02,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 3287 transitions. [2021-06-05 13:13:02,369 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 3287 transitions. Word has length 26 [2021-06-05 13:13:02,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:02,369 INFO L482 AbstractCegarLoop]: Abstraction has 1228 states and 3287 transitions. [2021-06-05 13:13:02,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:02,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 3287 transitions. [2021-06-05 13:13:02,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:02,370 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:02,370 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:02,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-06-05 13:13:02,370 INFO L430 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:02,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:02,370 INFO L82 PathProgramCache]: Analyzing trace with hash 2138688952, now seen corresponding path program 285 times [2021-06-05 13:13:02,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:02,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619468124] [2021-06-05 13:13:02,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:02,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:02,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:02,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619468124] [2021-06-05 13:13:02,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619468124] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:02,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:02,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:02,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970449312] [2021-06-05 13:13:02,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:02,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:02,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:02,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:02,444 INFO L87 Difference]: Start difference. First operand 1228 states and 3287 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:02,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:02,615 INFO L93 Difference]: Finished difference Result 1374 states and 3642 transitions. [2021-06-05 13:13:02,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:02,615 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:02,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:02,617 INFO L225 Difference]: With dead ends: 1374 [2021-06-05 13:13:02,617 INFO L226 Difference]: Without dead ends: 1287 [2021-06-05 13:13:02,617 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:02,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-06-05 13:13:02,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1225. [2021-06-05 13:13:02,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1224 states have (on average 2.6756535947712417) internal successors, (3275), 1224 states have internal predecessors, (3275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:02,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 3275 transitions. [2021-06-05 13:13:02,629 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 3275 transitions. Word has length 26 [2021-06-05 13:13:02,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:02,629 INFO L482 AbstractCegarLoop]: Abstraction has 1225 states and 3275 transitions. [2021-06-05 13:13:02,629 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:02,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 3275 transitions. [2021-06-05 13:13:02,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:02,630 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:02,630 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:02,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-06-05 13:13:02,630 INFO L430 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:02,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:02,630 INFO L82 PathProgramCache]: Analyzing trace with hash -36340652, now seen corresponding path program 286 times [2021-06-05 13:13:02,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:02,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986055728] [2021-06-05 13:13:02,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:02,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:02,690 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:02,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986055728] [2021-06-05 13:13:02,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986055728] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:02,690 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:02,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:02,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228833995] [2021-06-05 13:13:02,691 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:02,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:02,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:02,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:02,691 INFO L87 Difference]: Start difference. First operand 1225 states and 3275 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:02,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:02,869 INFO L93 Difference]: Finished difference Result 1354 states and 3596 transitions. [2021-06-05 13:13:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:02,869 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:02,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:02,871 INFO L225 Difference]: With dead ends: 1354 [2021-06-05 13:13:02,871 INFO L226 Difference]: Without dead ends: 1252 [2021-06-05 13:13:02,871 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:02,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-06-05 13:13:02,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1223. [2021-06-05 13:13:02,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 2.6783960720130935) internal successors, (3273), 1222 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 3273 transitions. [2021-06-05 13:13:02,884 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 3273 transitions. Word has length 26 [2021-06-05 13:13:02,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:02,884 INFO L482 AbstractCegarLoop]: Abstraction has 1223 states and 3273 transitions. [2021-06-05 13:13:02,884 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:02,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 3273 transitions. [2021-06-05 13:13:02,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:02,885 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:02,885 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:02,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-06-05 13:13:02,885 INFO L430 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:02,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:02,886 INFO L82 PathProgramCache]: Analyzing trace with hash -2094067648, now seen corresponding path program 287 times [2021-06-05 13:13:02,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:02,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769493717] [2021-06-05 13:13:02,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:02,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:02,958 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:02,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769493717] [2021-06-05 13:13:02,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769493717] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:02,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:02,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:02,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366406720] [2021-06-05 13:13:02,959 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:02,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:02,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:02,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:02,959 INFO L87 Difference]: Start difference. First operand 1223 states and 3273 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:03,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:03,131 INFO L93 Difference]: Finished difference Result 1345 states and 3575 transitions. [2021-06-05 13:13:03,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:03,132 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:03,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:03,133 INFO L225 Difference]: With dead ends: 1345 [2021-06-05 13:13:03,133 INFO L226 Difference]: Without dead ends: 1248 [2021-06-05 13:13:03,133 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:03,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-06-05 13:13:03,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1222. [2021-06-05 13:13:03,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 2.678132678132678) internal successors, (3270), 1221 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:03,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 3270 transitions. [2021-06-05 13:13:03,145 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 3270 transitions. Word has length 26 [2021-06-05 13:13:03,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:03,145 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 3270 transitions. [2021-06-05 13:13:03,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:03,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 3270 transitions. [2021-06-05 13:13:03,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:03,146 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:03,146 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:03,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-06-05 13:13:03,146 INFO L430 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:03,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:03,147 INFO L82 PathProgramCache]: Analyzing trace with hash 808755102, now seen corresponding path program 288 times [2021-06-05 13:13:03,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:03,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772740093] [2021-06-05 13:13:03,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:03,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:03,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:03,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772740093] [2021-06-05 13:13:03,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772740093] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:03,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:03,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:03,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416532913] [2021-06-05 13:13:03,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:03,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:03,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:03,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:03,214 INFO L87 Difference]: Start difference. First operand 1222 states and 3270 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:03,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:03,386 INFO L93 Difference]: Finished difference Result 1347 states and 3575 transitions. [2021-06-05 13:13:03,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:03,386 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:03,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:03,388 INFO L225 Difference]: With dead ends: 1347 [2021-06-05 13:13:03,388 INFO L226 Difference]: Without dead ends: 1226 [2021-06-05 13:13:03,388 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:03,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-06-05 13:13:03,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1190. [2021-06-05 13:13:03,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 1189 states have (on average 2.686291000841043) internal successors, (3194), 1189 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:03,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 3194 transitions. [2021-06-05 13:13:03,399 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 3194 transitions. Word has length 26 [2021-06-05 13:13:03,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:03,399 INFO L482 AbstractCegarLoop]: Abstraction has 1190 states and 3194 transitions. [2021-06-05 13:13:03,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:03,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 3194 transitions. [2021-06-05 13:13:03,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:03,400 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:03,400 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:03,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-06-05 13:13:03,401 INFO L430 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:03,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:03,401 INFO L82 PathProgramCache]: Analyzing trace with hash 934338240, now seen corresponding path program 289 times [2021-06-05 13:13:03,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:03,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655622635] [2021-06-05 13:13:03,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:03,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:03,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655622635] [2021-06-05 13:13:03,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655622635] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:03,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:03,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:13:03,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013339188] [2021-06-05 13:13:03,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:13:03,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:03,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:13:03,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:03,450 INFO L87 Difference]: Start difference. First operand 1190 states and 3194 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:03,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:03,573 INFO L93 Difference]: Finished difference Result 1469 states and 3888 transitions. [2021-06-05 13:13:03,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:13:03,574 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:03,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:03,575 INFO L225 Difference]: With dead ends: 1469 [2021-06-05 13:13:03,575 INFO L226 Difference]: Without dead ends: 1294 [2021-06-05 13:13:03,575 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:03,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-06-05 13:13:03,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1264. [2021-06-05 13:13:03,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1263 states have (on average 2.66270783847981) internal successors, (3363), 1263 states have internal predecessors, (3363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:03,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 3363 transitions. [2021-06-05 13:13:03,587 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 3363 transitions. Word has length 26 [2021-06-05 13:13:03,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:03,587 INFO L482 AbstractCegarLoop]: Abstraction has 1264 states and 3363 transitions. [2021-06-05 13:13:03,587 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:03,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 3363 transitions. [2021-06-05 13:13:03,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:03,588 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:03,589 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:03,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-06-05 13:13:03,589 INFO L430 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:03,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:03,589 INFO L82 PathProgramCache]: Analyzing trace with hash 26087104, now seen corresponding path program 290 times [2021-06-05 13:13:03,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:03,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290934709] [2021-06-05 13:13:03,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:03,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:03,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290934709] [2021-06-05 13:13:03,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290934709] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:03,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:03,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:13:03,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961702594] [2021-06-05 13:13:03,639 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:13:03,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:03,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:13:03,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:03,639 INFO L87 Difference]: Start difference. First operand 1264 states and 3363 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:03,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:03,766 INFO L93 Difference]: Finished difference Result 1463 states and 3865 transitions. [2021-06-05 13:13:03,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:13:03,767 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:03,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:03,768 INFO L225 Difference]: With dead ends: 1463 [2021-06-05 13:13:03,768 INFO L226 Difference]: Without dead ends: 1305 [2021-06-05 13:13:03,768 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:03,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2021-06-05 13:13:03,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1277. [2021-06-05 13:13:03,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1276 states have (on average 2.6504702194357366) internal successors, (3382), 1276 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:03,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 3382 transitions. [2021-06-05 13:13:03,780 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 3382 transitions. Word has length 26 [2021-06-05 13:13:03,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:03,780 INFO L482 AbstractCegarLoop]: Abstraction has 1277 states and 3382 transitions. [2021-06-05 13:13:03,780 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:03,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 3382 transitions. [2021-06-05 13:13:03,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:03,782 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:03,782 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:03,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-06-05 13:13:03,782 INFO L430 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:03,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:03,782 INFO L82 PathProgramCache]: Analyzing trace with hash 946663070, now seen corresponding path program 291 times [2021-06-05 13:13:03,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:03,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106472878] [2021-06-05 13:13:03,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:03,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:03,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:03,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106472878] [2021-06-05 13:13:03,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106472878] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:03,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:03,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:13:03,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235593872] [2021-06-05 13:13:03,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:13:03,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:03,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:13:03,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:03,845 INFO L87 Difference]: Start difference. First operand 1277 states and 3382 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:03,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:03,973 INFO L93 Difference]: Finished difference Result 1480 states and 3886 transitions. [2021-06-05 13:13:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:13:03,973 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:03,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:03,975 INFO L225 Difference]: With dead ends: 1480 [2021-06-05 13:13:03,975 INFO L226 Difference]: Without dead ends: 1330 [2021-06-05 13:13:03,975 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:03,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-06-05 13:13:03,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1268. [2021-06-05 13:13:03,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 1267 states have (on average 2.6479873717442777) internal successors, (3355), 1267 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:03,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 3355 transitions. [2021-06-05 13:13:03,987 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 3355 transitions. Word has length 26 [2021-06-05 13:13:03,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:03,987 INFO L482 AbstractCegarLoop]: Abstraction has 1268 states and 3355 transitions. [2021-06-05 13:13:03,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:03,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 3355 transitions. [2021-06-05 13:13:03,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:03,988 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:03,988 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:03,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-06-05 13:13:03,988 INFO L430 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:03,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:03,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1222936682, now seen corresponding path program 292 times [2021-06-05 13:13:03,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:03,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917152591] [2021-06-05 13:13:03,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:04,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:04,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:04,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917152591] [2021-06-05 13:13:04,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917152591] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:04,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:04,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:13:04,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867505353] [2021-06-05 13:13:04,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:13:04,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:04,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:13:04,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:04,042 INFO L87 Difference]: Start difference. First operand 1268 states and 3355 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:04,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:04,170 INFO L93 Difference]: Finished difference Result 1405 states and 3686 transitions. [2021-06-05 13:13:04,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:13:04,170 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:04,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:04,172 INFO L225 Difference]: With dead ends: 1405 [2021-06-05 13:13:04,172 INFO L226 Difference]: Without dead ends: 1180 [2021-06-05 13:13:04,172 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:04,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2021-06-05 13:13:04,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1124. [2021-06-05 13:13:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 1123 states have (on average 2.646482635796972) internal successors, (2972), 1123 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 2972 transitions. [2021-06-05 13:13:04,182 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 2972 transitions. Word has length 26 [2021-06-05 13:13:04,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:04,182 INFO L482 AbstractCegarLoop]: Abstraction has 1124 states and 2972 transitions. [2021-06-05 13:13:04,183 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:04,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 2972 transitions. [2021-06-05 13:13:04,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:04,184 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:04,184 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:04,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-06-05 13:13:04,184 INFO L430 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:04,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:04,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1525154592, now seen corresponding path program 293 times [2021-06-05 13:13:04,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:04,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822103042] [2021-06-05 13:13:04,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:04,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:04,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:04,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822103042] [2021-06-05 13:13:04,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822103042] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:04,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:04,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:13:04,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662283418] [2021-06-05 13:13:04,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:13:04,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:04,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:13:04,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:04,234 INFO L87 Difference]: Start difference. First operand 1124 states and 2972 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:04,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:04,365 INFO L93 Difference]: Finished difference Result 1284 states and 3343 transitions. [2021-06-05 13:13:04,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:13:04,365 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:04,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:04,366 INFO L225 Difference]: With dead ends: 1284 [2021-06-05 13:13:04,366 INFO L226 Difference]: Without dead ends: 1064 [2021-06-05 13:13:04,366 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:04,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2021-06-05 13:13:04,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1040. [2021-06-05 13:13:04,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 1039 states have (on average 2.6121270452358036) internal successors, (2714), 1039 states have internal predecessors, (2714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:04,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 2714 transitions. [2021-06-05 13:13:04,376 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 2714 transitions. Word has length 26 [2021-06-05 13:13:04,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:04,376 INFO L482 AbstractCegarLoop]: Abstraction has 1040 states and 2714 transitions. [2021-06-05 13:13:04,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:04,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 2714 transitions. [2021-06-05 13:13:04,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:04,377 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:04,377 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:04,377 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-06-05 13:13:04,377 INFO L430 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:04,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:04,378 INFO L82 PathProgramCache]: Analyzing trace with hash 665569598, now seen corresponding path program 294 times [2021-06-05 13:13:04,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:04,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478063474] [2021-06-05 13:13:04,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:04,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:04,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:04,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478063474] [2021-06-05 13:13:04,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478063474] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:04,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:04,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:04,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794151844] [2021-06-05 13:13:04,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:04,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:04,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:04,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:04,437 INFO L87 Difference]: Start difference. First operand 1040 states and 2714 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:04,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:04,604 INFO L93 Difference]: Finished difference Result 1182 states and 3054 transitions. [2021-06-05 13:13:04,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:04,604 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:04,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:04,605 INFO L225 Difference]: With dead ends: 1182 [2021-06-05 13:13:04,605 INFO L226 Difference]: Without dead ends: 982 [2021-06-05 13:13:04,605 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:04,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-06-05 13:13:04,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 950. [2021-06-05 13:13:04,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 949 states have (on average 2.6217070600632244) internal successors, (2488), 949 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:04,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 2488 transitions. [2021-06-05 13:13:04,614 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 2488 transitions. Word has length 26 [2021-06-05 13:13:04,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:04,614 INFO L482 AbstractCegarLoop]: Abstraction has 950 states and 2488 transitions. [2021-06-05 13:13:04,614 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:04,614 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 2488 transitions. [2021-06-05 13:13:04,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:04,615 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:04,615 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:04,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-06-05 13:13:04,615 INFO L430 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:04,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:04,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1307346048, now seen corresponding path program 295 times [2021-06-05 13:13:04,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:04,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697974730] [2021-06-05 13:13:04,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:04,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:04,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697974730] [2021-06-05 13:13:04,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697974730] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:04,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:04,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:04,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955604681] [2021-06-05 13:13:04,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:04,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:04,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:04,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:04,675 INFO L87 Difference]: Start difference. First operand 950 states and 2488 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:04,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:04,846 INFO L93 Difference]: Finished difference Result 1068 states and 2776 transitions. [2021-06-05 13:13:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:04,846 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:04,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:04,847 INFO L225 Difference]: With dead ends: 1068 [2021-06-05 13:13:04,847 INFO L226 Difference]: Without dead ends: 975 [2021-06-05 13:13:04,847 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:04,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2021-06-05 13:13:04,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 956. [2021-06-05 13:13:04,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 955 states have (on average 2.6157068062827227) internal successors, (2498), 955 states have internal predecessors, (2498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:04,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 2498 transitions. [2021-06-05 13:13:04,856 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 2498 transitions. Word has length 26 [2021-06-05 13:13:04,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:04,857 INFO L482 AbstractCegarLoop]: Abstraction has 956 states and 2498 transitions. [2021-06-05 13:13:04,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:04,857 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 2498 transitions. [2021-06-05 13:13:04,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:04,857 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:04,858 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:04,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-06-05 13:13:04,858 INFO L430 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:04,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:04,858 INFO L82 PathProgramCache]: Analyzing trace with hash 399094912, now seen corresponding path program 296 times [2021-06-05 13:13:04,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:04,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833254568] [2021-06-05 13:13:04,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:04,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:04,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:04,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833254568] [2021-06-05 13:13:04,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833254568] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:04,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:04,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:04,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466955564] [2021-06-05 13:13:04,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:04,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:04,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:04,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:04,918 INFO L87 Difference]: Start difference. First operand 956 states and 2498 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:05,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:05,086 INFO L93 Difference]: Finished difference Result 1078 states and 2806 transitions. [2021-06-05 13:13:05,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:05,088 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:05,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:05,089 INFO L225 Difference]: With dead ends: 1078 [2021-06-05 13:13:05,089 INFO L226 Difference]: Without dead ends: 1003 [2021-06-05 13:13:05,089 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:05,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-06-05 13:13:05,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 959. [2021-06-05 13:13:05,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 958 states have (on average 2.6189979123173277) internal successors, (2509), 958 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:05,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 2509 transitions. [2021-06-05 13:13:05,098 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 2509 transitions. Word has length 26 [2021-06-05 13:13:05,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:05,098 INFO L482 AbstractCegarLoop]: Abstraction has 959 states and 2509 transitions. [2021-06-05 13:13:05,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:05,098 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 2509 transitions. [2021-06-05 13:13:05,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:05,099 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:05,099 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:05,099 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-06-05 13:13:05,099 INFO L430 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:05,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:05,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1268539520, now seen corresponding path program 297 times [2021-06-05 13:13:05,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:05,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847650689] [2021-06-05 13:13:05,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:05,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:05,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847650689] [2021-06-05 13:13:05,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847650689] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:05,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:05,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:05,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383026273] [2021-06-05 13:13:05,159 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:05,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:05,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:05,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:05,159 INFO L87 Difference]: Start difference. First operand 959 states and 2509 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:05,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:05,328 INFO L93 Difference]: Finished difference Result 1113 states and 2881 transitions. [2021-06-05 13:13:05,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:05,329 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:05,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:05,330 INFO L225 Difference]: With dead ends: 1113 [2021-06-05 13:13:05,330 INFO L226 Difference]: Without dead ends: 981 [2021-06-05 13:13:05,330 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:05,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2021-06-05 13:13:05,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 941. [2021-06-05 13:13:05,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 940 states have (on average 2.620212765957447) internal successors, (2463), 940 states have internal predecessors, (2463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:05,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 2463 transitions. [2021-06-05 13:13:05,339 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 2463 transitions. Word has length 26 [2021-06-05 13:13:05,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:05,339 INFO L482 AbstractCegarLoop]: Abstraction has 941 states and 2463 transitions. [2021-06-05 13:13:05,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:05,339 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 2463 transitions. [2021-06-05 13:13:05,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:05,340 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:05,340 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:05,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-06-05 13:13:05,340 INFO L430 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:05,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:05,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1319670878, now seen corresponding path program 298 times [2021-06-05 13:13:05,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:05,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25989519] [2021-06-05 13:13:05,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:05,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:05,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25989519] [2021-06-05 13:13:05,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25989519] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:05,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:05,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:05,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748417127] [2021-06-05 13:13:05,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:05,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:05,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:05,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:05,401 INFO L87 Difference]: Start difference. First operand 941 states and 2463 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:05,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:05,569 INFO L93 Difference]: Finished difference Result 1045 states and 2715 transitions. [2021-06-05 13:13:05,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:05,569 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:05,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:05,570 INFO L225 Difference]: With dead ends: 1045 [2021-06-05 13:13:05,570 INFO L226 Difference]: Without dead ends: 955 [2021-06-05 13:13:05,571 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:05,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2021-06-05 13:13:05,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 926. [2021-06-05 13:13:05,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 2.627027027027027) internal successors, (2430), 925 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:05,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 2430 transitions. [2021-06-05 13:13:05,583 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 2430 transitions. Word has length 26 [2021-06-05 13:13:05,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:05,583 INFO L482 AbstractCegarLoop]: Abstraction has 926 states and 2430 transitions. [2021-06-05 13:13:05,584 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:05,584 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 2430 transitions. [2021-06-05 13:13:05,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:05,585 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:05,585 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:05,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-06-05 13:13:05,585 INFO L430 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:05,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:05,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1696776638, now seen corresponding path program 299 times [2021-06-05 13:13:05,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:05,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471263515] [2021-06-05 13:13:05,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:05,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:05,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:05,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471263515] [2021-06-05 13:13:05,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471263515] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:05,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:05,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:05,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612892478] [2021-06-05 13:13:05,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:05,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:05,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:05,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:05,645 INFO L87 Difference]: Start difference. First operand 926 states and 2430 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:05,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:05,809 INFO L93 Difference]: Finished difference Result 1077 states and 2798 transitions. [2021-06-05 13:13:05,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:05,809 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:05,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:05,810 INFO L225 Difference]: With dead ends: 1077 [2021-06-05 13:13:05,810 INFO L226 Difference]: Without dead ends: 984 [2021-06-05 13:13:05,811 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:05,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2021-06-05 13:13:05,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 926. [2021-06-05 13:13:05,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 2.6183783783783783) internal successors, (2422), 925 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:05,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 2422 transitions. [2021-06-05 13:13:05,819 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 2422 transitions. Word has length 26 [2021-06-05 13:13:05,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:05,820 INFO L482 AbstractCegarLoop]: Abstraction has 926 states and 2422 transitions. [2021-06-05 13:13:05,820 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:05,820 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 2422 transitions. [2021-06-05 13:13:05,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:05,820 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:05,820 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:05,821 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-06-05 13:13:05,821 INFO L430 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:05,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:05,821 INFO L82 PathProgramCache]: Analyzing trace with hash 810733658, now seen corresponding path program 300 times [2021-06-05 13:13:05,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:05,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736813149] [2021-06-05 13:13:05,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:05,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:05,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:05,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736813149] [2021-06-05 13:13:05,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736813149] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:05,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:05,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:05,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927267258] [2021-06-05 13:13:05,879 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:05,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:05,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:05,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:05,880 INFO L87 Difference]: Start difference. First operand 926 states and 2422 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:06,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:06,045 INFO L93 Difference]: Finished difference Result 1095 states and 2837 transitions. [2021-06-05 13:13:06,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:06,046 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:06,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:06,047 INFO L225 Difference]: With dead ends: 1095 [2021-06-05 13:13:06,047 INFO L226 Difference]: Without dead ends: 1012 [2021-06-05 13:13:06,047 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:06,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-06-05 13:13:06,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 914. [2021-06-05 13:13:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 913 states have (on average 2.623220153340635) internal successors, (2395), 913 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 2395 transitions. [2021-06-05 13:13:06,056 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 2395 transitions. Word has length 26 [2021-06-05 13:13:06,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:06,056 INFO L482 AbstractCegarLoop]: Abstraction has 914 states and 2395 transitions. [2021-06-05 13:13:06,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:06,056 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 2395 transitions. [2021-06-05 13:13:06,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:06,057 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:06,057 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:06,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-06-05 13:13:06,057 INFO L430 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:06,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:06,057 INFO L82 PathProgramCache]: Analyzing trace with hash -758194884, now seen corresponding path program 301 times [2021-06-05 13:13:06,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:06,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974625523] [2021-06-05 13:13:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:06,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:06,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:06,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974625523] [2021-06-05 13:13:06,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974625523] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:06,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:06,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:06,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679081000] [2021-06-05 13:13:06,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:06,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:06,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:06,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:06,117 INFO L87 Difference]: Start difference. First operand 914 states and 2395 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:06,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:06,286 INFO L93 Difference]: Finished difference Result 1015 states and 2644 transitions. [2021-06-05 13:13:06,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:06,286 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:06,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:06,287 INFO L225 Difference]: With dead ends: 1015 [2021-06-05 13:13:06,287 INFO L226 Difference]: Without dead ends: 928 [2021-06-05 13:13:06,288 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:06,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2021-06-05 13:13:06,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 876. [2021-06-05 13:13:06,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 2.6285714285714286) internal successors, (2300), 875 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:06,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2300 transitions. [2021-06-05 13:13:06,296 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2300 transitions. Word has length 26 [2021-06-05 13:13:06,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:06,296 INFO L482 AbstractCegarLoop]: Abstraction has 876 states and 2300 transitions. [2021-06-05 13:13:06,297 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:06,297 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2300 transitions. [2021-06-05 13:13:06,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:06,297 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:06,297 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:06,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-06-05 13:13:06,298 INFO L430 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:06,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:06,298 INFO L82 PathProgramCache]: Analyzing trace with hash -504509764, now seen corresponding path program 302 times [2021-06-05 13:13:06,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:06,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612706319] [2021-06-05 13:13:06,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:06,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:06,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:06,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612706319] [2021-06-05 13:13:06,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612706319] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:06,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:06,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:06,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15073661] [2021-06-05 13:13:06,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:06,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:06,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:06,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:06,358 INFO L87 Difference]: Start difference. First operand 876 states and 2300 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:06,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:06,528 INFO L93 Difference]: Finished difference Result 1024 states and 2650 transitions. [2021-06-05 13:13:06,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:06,528 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:06,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:06,529 INFO L225 Difference]: With dead ends: 1024 [2021-06-05 13:13:06,529 INFO L226 Difference]: Without dead ends: 949 [2021-06-05 13:13:06,529 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:06,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2021-06-05 13:13:06,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 881. [2021-06-05 13:13:06,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 880 states have (on average 2.631818181818182) internal successors, (2316), 880 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:06,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 2316 transitions. [2021-06-05 13:13:06,538 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 2316 transitions. Word has length 26 [2021-06-05 13:13:06,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:06,538 INFO L482 AbstractCegarLoop]: Abstraction has 881 states and 2316 transitions. [2021-06-05 13:13:06,538 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:06,538 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 2316 transitions. [2021-06-05 13:13:06,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:06,539 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:06,539 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:06,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-06-05 13:13:06,539 INFO L430 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:06,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:06,539 INFO L82 PathProgramCache]: Analyzing trace with hash 364934844, now seen corresponding path program 303 times [2021-06-05 13:13:06,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:06,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118282522] [2021-06-05 13:13:06,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:06,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:06,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118282522] [2021-06-05 13:13:06,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118282522] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:06,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:06,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:06,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468024872] [2021-06-05 13:13:06,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:06,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:06,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:06,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:06,600 INFO L87 Difference]: Start difference. First operand 881 states and 2316 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:06,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:06,772 INFO L93 Difference]: Finished difference Result 1013 states and 2642 transitions. [2021-06-05 13:13:06,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:06,772 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:06,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:06,773 INFO L225 Difference]: With dead ends: 1013 [2021-06-05 13:13:06,773 INFO L226 Difference]: Without dead ends: 912 [2021-06-05 13:13:06,774 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:06,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-06-05 13:13:06,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 880. [2021-06-05 13:13:06,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 2.6302616609783844) internal successors, (2312), 879 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:06,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 2312 transitions. [2021-06-05 13:13:06,783 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 2312 transitions. Word has length 26 [2021-06-05 13:13:06,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:06,783 INFO L482 AbstractCegarLoop]: Abstraction has 880 states and 2312 transitions. [2021-06-05 13:13:06,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:06,783 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 2312 transitions. [2021-06-05 13:13:06,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:06,784 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:06,784 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:06,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-06-05 13:13:06,784 INFO L430 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:06,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:06,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1103776386, now seen corresponding path program 304 times [2021-06-05 13:13:06,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:06,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139038716] [2021-06-05 13:13:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:06,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:06,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139038716] [2021-06-05 13:13:06,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139038716] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:06,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:06,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:06,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495715586] [2021-06-05 13:13:06,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:06,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:06,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:06,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:06,846 INFO L87 Difference]: Start difference. First operand 880 states and 2312 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:07,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:07,014 INFO L93 Difference]: Finished difference Result 1005 states and 2609 transitions. [2021-06-05 13:13:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:07,015 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:07,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:07,016 INFO L225 Difference]: With dead ends: 1005 [2021-06-05 13:13:07,016 INFO L226 Difference]: Without dead ends: 924 [2021-06-05 13:13:07,016 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:07,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-06-05 13:13:07,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 882. [2021-06-05 13:13:07,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 2.633371169125993) internal successors, (2320), 881 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2320 transitions. [2021-06-05 13:13:07,026 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2320 transitions. Word has length 26 [2021-06-05 13:13:07,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:07,026 INFO L482 AbstractCegarLoop]: Abstraction has 882 states and 2320 transitions. [2021-06-05 13:13:07,026 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:07,026 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2320 transitions. [2021-06-05 13:13:07,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:07,027 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:07,027 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:07,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-06-05 13:13:07,027 INFO L430 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:07,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:07,027 INFO L82 PathProgramCache]: Analyzing trace with hash -711317730, now seen corresponding path program 305 times [2021-06-05 13:13:07,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:07,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647555773] [2021-06-05 13:13:07,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:07,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:07,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647555773] [2021-06-05 13:13:07,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647555773] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:07,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:07,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:07,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279877704] [2021-06-05 13:13:07,089 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:07,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:07,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:07,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:07,089 INFO L87 Difference]: Start difference. First operand 882 states and 2320 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:07,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:07,259 INFO L93 Difference]: Finished difference Result 1011 states and 2638 transitions. [2021-06-05 13:13:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:07,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:07,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:07,261 INFO L225 Difference]: With dead ends: 1011 [2021-06-05 13:13:07,261 INFO L226 Difference]: Without dead ends: 936 [2021-06-05 13:13:07,261 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:07,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2021-06-05 13:13:07,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 886. [2021-06-05 13:13:07,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 885 states have (on average 2.6372881355932205) internal successors, (2334), 885 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:07,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 2334 transitions. [2021-06-05 13:13:07,270 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 2334 transitions. Word has length 26 [2021-06-05 13:13:07,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:07,270 INFO L482 AbstractCegarLoop]: Abstraction has 886 states and 2334 transitions. [2021-06-05 13:13:07,270 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:07,270 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 2334 transitions. [2021-06-05 13:13:07,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:07,271 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:07,271 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:07,271 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-06-05 13:13:07,271 INFO L430 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:07,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:07,271 INFO L82 PathProgramCache]: Analyzing trace with hash 158126878, now seen corresponding path program 306 times [2021-06-05 13:13:07,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:07,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621559359] [2021-06-05 13:13:07,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:07,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:07,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621559359] [2021-06-05 13:13:07,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621559359] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:07,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:07,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:07,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342012455] [2021-06-05 13:13:07,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:07,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:07,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:07,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:07,336 INFO L87 Difference]: Start difference. First operand 886 states and 2334 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:07,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:07,510 INFO L93 Difference]: Finished difference Result 1026 states and 2678 transitions. [2021-06-05 13:13:07,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:07,511 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:07,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:07,512 INFO L225 Difference]: With dead ends: 1026 [2021-06-05 13:13:07,512 INFO L226 Difference]: Without dead ends: 925 [2021-06-05 13:13:07,512 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:07,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2021-06-05 13:13:07,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 883. [2021-06-05 13:13:07,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 2.6360544217687076) internal successors, (2325), 882 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:07,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 2325 transitions. [2021-06-05 13:13:07,521 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 2325 transitions. Word has length 26 [2021-06-05 13:13:07,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:07,521 INFO L482 AbstractCegarLoop]: Abstraction has 883 states and 2325 transitions. [2021-06-05 13:13:07,521 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:07,521 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 2325 transitions. [2021-06-05 13:13:07,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:07,522 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:07,522 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:07,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-06-05 13:13:07,522 INFO L430 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:07,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:07,522 INFO L82 PathProgramCache]: Analyzing trace with hash 2078810748, now seen corresponding path program 307 times [2021-06-05 13:13:07,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:07,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183391320] [2021-06-05 13:13:07,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:07,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:07,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:07,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183391320] [2021-06-05 13:13:07,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183391320] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:07,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:07,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:07,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250503084] [2021-06-05 13:13:07,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:07,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:07,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:07,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:07,585 INFO L87 Difference]: Start difference. First operand 883 states and 2325 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:07,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:07,755 INFO L93 Difference]: Finished difference Result 993 states and 2589 transitions. [2021-06-05 13:13:07,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:07,755 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:07,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:07,756 INFO L225 Difference]: With dead ends: 993 [2021-06-05 13:13:07,756 INFO L226 Difference]: Without dead ends: 912 [2021-06-05 13:13:07,756 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:07,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-06-05 13:13:07,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 884. [2021-06-05 13:13:07,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 883 states have (on average 2.6342015855039635) internal successors, (2326), 883 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:07,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 2326 transitions. [2021-06-05 13:13:07,765 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 2326 transitions. Word has length 26 [2021-06-05 13:13:07,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:07,765 INFO L482 AbstractCegarLoop]: Abstraction has 884 states and 2326 transitions. [2021-06-05 13:13:07,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:07,765 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 2326 transitions. [2021-06-05 13:13:07,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:07,766 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:07,766 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:07,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-06-05 13:13:07,766 INFO L430 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:07,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:07,766 INFO L82 PathProgramCache]: Analyzing trace with hash -96218856, now seen corresponding path program 308 times [2021-06-05 13:13:07,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:07,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60604227] [2021-06-05 13:13:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:07,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:07,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:07,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60604227] [2021-06-05 13:13:07,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60604227] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:07,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:07,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:07,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906102058] [2021-06-05 13:13:07,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:07,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:07,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:07,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:07,827 INFO L87 Difference]: Start difference. First operand 884 states and 2326 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:07,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:07,999 INFO L93 Difference]: Finished difference Result 999 states and 2604 transitions. [2021-06-05 13:13:07,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:07,999 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:07,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:08,001 INFO L225 Difference]: With dead ends: 999 [2021-06-05 13:13:08,001 INFO L226 Difference]: Without dead ends: 890 [2021-06-05 13:13:08,001 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:08,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-06-05 13:13:08,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 878. [2021-06-05 13:13:08,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 2.637400228050171) internal successors, (2313), 877 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:08,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 2313 transitions. [2021-06-05 13:13:08,009 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 2313 transitions. Word has length 26 [2021-06-05 13:13:08,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:08,009 INFO L482 AbstractCegarLoop]: Abstraction has 878 states and 2313 transitions. [2021-06-05 13:13:08,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:08,009 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 2313 transitions. [2021-06-05 13:13:08,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:08,010 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:08,010 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:08,010 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-06-05 13:13:08,010 INFO L430 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:08,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:08,011 INFO L82 PathProgramCache]: Analyzing trace with hash 408641760, now seen corresponding path program 309 times [2021-06-05 13:13:08,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:08,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326001710] [2021-06-05 13:13:08,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:08,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:08,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326001710] [2021-06-05 13:13:08,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326001710] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:08,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:08,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:08,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117558592] [2021-06-05 13:13:08,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:08,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:08,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:08,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:08,078 INFO L87 Difference]: Start difference. First operand 878 states and 2313 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:08,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:08,254 INFO L93 Difference]: Finished difference Result 1017 states and 2638 transitions. [2021-06-05 13:13:08,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:08,254 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:08,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:08,255 INFO L225 Difference]: With dead ends: 1017 [2021-06-05 13:13:08,255 INFO L226 Difference]: Without dead ends: 938 [2021-06-05 13:13:08,256 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:08,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-06-05 13:13:08,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 878. [2021-06-05 13:13:08,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 2.637400228050171) internal successors, (2313), 877 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:08,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 2313 transitions. [2021-06-05 13:13:08,264 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 2313 transitions. Word has length 26 [2021-06-05 13:13:08,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:08,265 INFO L482 AbstractCegarLoop]: Abstraction has 878 states and 2313 transitions. [2021-06-05 13:13:08,265 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:08,265 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 2313 transitions. [2021-06-05 13:13:08,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:08,265 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:08,265 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:08,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-06-05 13:13:08,266 INFO L430 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:08,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:08,266 INFO L82 PathProgramCache]: Analyzing trace with hash -983502786, now seen corresponding path program 310 times [2021-06-05 13:13:08,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:08,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897061117] [2021-06-05 13:13:08,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:08,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:08,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897061117] [2021-06-05 13:13:08,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897061117] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:08,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:08,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:08,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982344205] [2021-06-05 13:13:08,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:08,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:08,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:08,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:08,326 INFO L87 Difference]: Start difference. First operand 878 states and 2313 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:08,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:08,490 INFO L93 Difference]: Finished difference Result 986 states and 2573 transitions. [2021-06-05 13:13:08,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:08,490 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:08,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:08,491 INFO L225 Difference]: With dead ends: 986 [2021-06-05 13:13:08,491 INFO L226 Difference]: Without dead ends: 900 [2021-06-05 13:13:08,491 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-06-05 13:13:08,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 871. [2021-06-05 13:13:08,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 870 states have (on average 2.6390804597701147) internal successors, (2296), 870 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:08,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 2296 transitions. [2021-06-05 13:13:08,500 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 2296 transitions. Word has length 26 [2021-06-05 13:13:08,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:08,500 INFO L482 AbstractCegarLoop]: Abstraction has 871 states and 2296 transitions. [2021-06-05 13:13:08,500 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:08,500 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 2296 transitions. [2021-06-05 13:13:08,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:08,501 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:08,501 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:08,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-06-05 13:13:08,501 INFO L430 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:08,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:08,501 INFO L82 PathProgramCache]: Analyzing trace with hash -193149290, now seen corresponding path program 311 times [2021-06-05 13:13:08,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:08,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309041820] [2021-06-05 13:13:08,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:08,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:08,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:08,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309041820] [2021-06-05 13:13:08,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309041820] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:08,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:08,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:08,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397692631] [2021-06-05 13:13:08,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:08,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:08,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:08,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:08,571 INFO L87 Difference]: Start difference. First operand 871 states and 2296 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:08,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:08,743 INFO L93 Difference]: Finished difference Result 1044 states and 2714 transitions. [2021-06-05 13:13:08,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:08,743 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:08,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:08,745 INFO L225 Difference]: With dead ends: 1044 [2021-06-05 13:13:08,745 INFO L226 Difference]: Without dead ends: 907 [2021-06-05 13:13:08,745 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:08,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-06-05 13:13:08,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 883. [2021-06-05 13:13:08,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 2.6258503401360542) internal successors, (2316), 882 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:08,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 2316 transitions. [2021-06-05 13:13:08,754 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 2316 transitions. Word has length 26 [2021-06-05 13:13:08,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:08,754 INFO L482 AbstractCegarLoop]: Abstraction has 883 states and 2316 transitions. [2021-06-05 13:13:08,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:08,754 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 2316 transitions. [2021-06-05 13:13:08,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:08,755 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:08,755 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:08,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-06-05 13:13:08,755 INFO L430 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:08,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:08,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1101400426, now seen corresponding path program 312 times [2021-06-05 13:13:08,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:08,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647715386] [2021-06-05 13:13:08,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:08,815 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:08,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647715386] [2021-06-05 13:13:08,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647715386] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:08,815 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:08,815 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:08,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420131321] [2021-06-05 13:13:08,815 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:08,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:08,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:08,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:08,815 INFO L87 Difference]: Start difference. First operand 883 states and 2316 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:08,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:08,980 INFO L93 Difference]: Finished difference Result 1036 states and 2690 transitions. [2021-06-05 13:13:08,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:08,980 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:08,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:08,981 INFO L225 Difference]: With dead ends: 1036 [2021-06-05 13:13:08,981 INFO L226 Difference]: Without dead ends: 910 [2021-06-05 13:13:08,981 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:08,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2021-06-05 13:13:08,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 896. [2021-06-05 13:13:08,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 2.611173184357542) internal successors, (2337), 895 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:08,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2337 transitions. [2021-06-05 13:13:08,990 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2337 transitions. Word has length 26 [2021-06-05 13:13:08,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:08,990 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2337 transitions. [2021-06-05 13:13:08,990 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:08,990 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2337 transitions. [2021-06-05 13:13:08,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:08,991 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:08,991 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:08,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-06-05 13:13:08,991 INFO L430 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:08,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:08,991 INFO L82 PathProgramCache]: Analyzing trace with hash -180824460, now seen corresponding path program 313 times [2021-06-05 13:13:08,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:08,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048720820] [2021-06-05 13:13:08,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:09,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:09,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048720820] [2021-06-05 13:13:09,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048720820] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:09,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:09,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:09,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661825301] [2021-06-05 13:13:09,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:09,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:09,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:09,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:09,051 INFO L87 Difference]: Start difference. First operand 896 states and 2337 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:09,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:09,218 INFO L93 Difference]: Finished difference Result 1048 states and 2702 transitions. [2021-06-05 13:13:09,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:09,218 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:09,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:09,219 INFO L225 Difference]: With dead ends: 1048 [2021-06-05 13:13:09,219 INFO L226 Difference]: Without dead ends: 914 [2021-06-05 13:13:09,219 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:09,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-06-05 13:13:09,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 884. [2021-06-05 13:13:09,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 883 states have (on average 2.6104190260475653) internal successors, (2305), 883 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:09,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 2305 transitions. [2021-06-05 13:13:09,228 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 2305 transitions. Word has length 26 [2021-06-05 13:13:09,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:09,228 INFO L482 AbstractCegarLoop]: Abstraction has 884 states and 2305 transitions. [2021-06-05 13:13:09,228 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:09,228 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 2305 transitions. [2021-06-05 13:13:09,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:09,229 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:09,229 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:09,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-06-05 13:13:09,229 INFO L430 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:09,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:09,229 INFO L82 PathProgramCache]: Analyzing trace with hash -710790132, now seen corresponding path program 314 times [2021-06-05 13:13:09,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:09,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017450113] [2021-06-05 13:13:09,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:09,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:09,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:09,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017450113] [2021-06-05 13:13:09,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017450113] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:09,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:09,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:09,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162813112] [2021-06-05 13:13:09,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:09,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:09,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:09,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:09,299 INFO L87 Difference]: Start difference. First operand 884 states and 2305 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:09,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:09,468 INFO L93 Difference]: Finished difference Result 1011 states and 2623 transitions. [2021-06-05 13:13:09,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:09,469 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:09,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:09,470 INFO L225 Difference]: With dead ends: 1011 [2021-06-05 13:13:09,470 INFO L226 Difference]: Without dead ends: 865 [2021-06-05 13:13:09,470 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:09,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-06-05 13:13:09,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 845. [2021-06-05 13:13:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 2.625592417061611) internal successors, (2216), 844 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:09,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2216 transitions. [2021-06-05 13:13:09,478 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2216 transitions. Word has length 26 [2021-06-05 13:13:09,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:09,478 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2216 transitions. [2021-06-05 13:13:09,478 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:09,478 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2216 transitions. [2021-06-05 13:13:09,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:09,479 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:09,479 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:09,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-06-05 13:13:09,479 INFO L430 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:09,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:09,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1898437632, now seen corresponding path program 315 times [2021-06-05 13:13:09,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:09,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130162291] [2021-06-05 13:13:09,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:09,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:09,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:09,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130162291] [2021-06-05 13:13:09,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130162291] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:09,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:09,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:13:09,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038515541] [2021-06-05 13:13:09,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:13:09,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:09,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:13:09,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:09,531 INFO L87 Difference]: Start difference. First operand 845 states and 2216 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:09,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:09,677 INFO L93 Difference]: Finished difference Result 978 states and 2521 transitions. [2021-06-05 13:13:09,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:13:09,677 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:09,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:09,678 INFO L225 Difference]: With dead ends: 978 [2021-06-05 13:13:09,678 INFO L226 Difference]: Without dead ends: 883 [2021-06-05 13:13:09,678 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:09,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-06-05 13:13:09,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 845. [2021-06-05 13:13:09,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 2.6208530805687205) internal successors, (2212), 844 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:09,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2212 transitions. [2021-06-05 13:13:09,687 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2212 transitions. Word has length 26 [2021-06-05 13:13:09,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:09,687 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2212 transitions. [2021-06-05 13:13:09,687 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:09,687 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2212 transitions. [2021-06-05 13:13:09,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:09,688 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:09,688 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:09,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-06-05 13:13:09,688 INFO L430 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:09,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:09,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1247061632, now seen corresponding path program 316 times [2021-06-05 13:13:09,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:09,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351691766] [2021-06-05 13:13:09,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:09,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:09,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:09,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351691766] [2021-06-05 13:13:09,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351691766] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:09,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:09,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:09,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854018649] [2021-06-05 13:13:09,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:09,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:09,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:09,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:09,749 INFO L87 Difference]: Start difference. First operand 845 states and 2212 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:09,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:09,924 INFO L93 Difference]: Finished difference Result 986 states and 2546 transitions. [2021-06-05 13:13:09,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:09,924 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:09,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:09,925 INFO L225 Difference]: With dead ends: 986 [2021-06-05 13:13:09,925 INFO L226 Difference]: Without dead ends: 911 [2021-06-05 13:13:09,925 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:09,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2021-06-05 13:13:09,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 857. [2021-06-05 13:13:09,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 856 states have (on average 2.610981308411215) internal successors, (2235), 856 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:09,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 2235 transitions. [2021-06-05 13:13:09,933 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 2235 transitions. Word has length 26 [2021-06-05 13:13:09,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:09,933 INFO L482 AbstractCegarLoop]: Abstraction has 857 states and 2235 transitions. [2021-06-05 13:13:09,933 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:09,933 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 2235 transitions. [2021-06-05 13:13:09,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:09,934 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:09,934 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:09,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-06-05 13:13:09,934 INFO L430 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:09,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:09,934 INFO L82 PathProgramCache]: Analyzing trace with hash 2116506240, now seen corresponding path program 317 times [2021-06-05 13:13:09,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:09,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166431891] [2021-06-05 13:13:09,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:09,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:09,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:09,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166431891] [2021-06-05 13:13:09,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166431891] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:09,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:09,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:09,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797899100] [2021-06-05 13:13:09,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:09,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:09,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:09,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:09,997 INFO L87 Difference]: Start difference. First operand 857 states and 2235 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:10,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:10,168 INFO L93 Difference]: Finished difference Result 988 states and 2567 transitions. [2021-06-05 13:13:10,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:10,169 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:10,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:10,170 INFO L225 Difference]: With dead ends: 988 [2021-06-05 13:13:10,170 INFO L226 Difference]: Without dead ends: 883 [2021-06-05 13:13:10,170 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:10,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-06-05 13:13:10,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 852. [2021-06-05 13:13:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 2.602820211515864) internal successors, (2215), 851 states have internal predecessors, (2215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:10,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 2215 transitions. [2021-06-05 13:13:10,178 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 2215 transitions. Word has length 26 [2021-06-05 13:13:10,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:10,178 INFO L482 AbstractCegarLoop]: Abstraction has 852 states and 2215 transitions. [2021-06-05 13:13:10,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:10,178 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 2215 transitions. [2021-06-05 13:13:10,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:10,179 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:10,179 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:10,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-06-05 13:13:10,179 INFO L430 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:10,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:10,179 INFO L82 PathProgramCache]: Analyzing trace with hash -257777186, now seen corresponding path program 318 times [2021-06-05 13:13:10,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:10,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034398499] [2021-06-05 13:13:10,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:10,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:10,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034398499] [2021-06-05 13:13:10,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034398499] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:10,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:10,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:10,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837916486] [2021-06-05 13:13:10,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:10,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:10,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:10,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:10,242 INFO L87 Difference]: Start difference. First operand 852 states and 2215 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:10,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:10,412 INFO L93 Difference]: Finished difference Result 953 states and 2465 transitions. [2021-06-05 13:13:10,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:10,413 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:10,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:10,414 INFO L225 Difference]: With dead ends: 953 [2021-06-05 13:13:10,414 INFO L226 Difference]: Without dead ends: 872 [2021-06-05 13:13:10,414 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:10,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-06-05 13:13:10,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 856. [2021-06-05 13:13:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 2.601169590643275) internal successors, (2224), 855 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 2224 transitions. [2021-06-05 13:13:10,422 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 2224 transitions. Word has length 26 [2021-06-05 13:13:10,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:10,422 INFO L482 AbstractCegarLoop]: Abstraction has 856 states and 2224 transitions. [2021-06-05 13:13:10,422 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:10,422 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 2224 transitions. [2021-06-05 13:13:10,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:10,423 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:10,423 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:10,423 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-06-05 13:13:10,423 INFO L430 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:10,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:10,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1862160506, now seen corresponding path program 319 times [2021-06-05 13:13:10,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:10,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47731092] [2021-06-05 13:13:10,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:10,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:10,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:10,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47731092] [2021-06-05 13:13:10,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47731092] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:10,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:10,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:10,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759861661] [2021-06-05 13:13:10,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:10,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:10,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:10,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:10,484 INFO L87 Difference]: Start difference. First operand 856 states and 2224 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:10,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:10,651 INFO L93 Difference]: Finished difference Result 967 states and 2502 transitions. [2021-06-05 13:13:10,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:10,652 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:10,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:10,653 INFO L225 Difference]: With dead ends: 967 [2021-06-05 13:13:10,653 INFO L226 Difference]: Without dead ends: 864 [2021-06-05 13:13:10,653 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:10,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-06-05 13:13:10,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 853. [2021-06-05 13:13:10,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 2.603286384976526) internal successors, (2218), 852 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:10,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2218 transitions. [2021-06-05 13:13:10,661 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2218 transitions. Word has length 26 [2021-06-05 13:13:10,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:10,661 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2218 transitions. [2021-06-05 13:13:10,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:10,661 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2218 transitions. [2021-06-05 13:13:10,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:10,662 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:10,662 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:10,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-06-05 13:13:10,662 INFO L430 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:10,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:10,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1927946174, now seen corresponding path program 320 times [2021-06-05 13:13:10,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:10,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648472414] [2021-06-05 13:13:10,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:10,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:10,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:10,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648472414] [2021-06-05 13:13:10,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648472414] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:10,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:10,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:10,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102037281] [2021-06-05 13:13:10,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:10,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:10,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:10,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:10,723 INFO L87 Difference]: Start difference. First operand 853 states and 2218 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:10,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:10,891 INFO L93 Difference]: Finished difference Result 988 states and 2530 transitions. [2021-06-05 13:13:10,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:10,892 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:10,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:10,893 INFO L225 Difference]: With dead ends: 988 [2021-06-05 13:13:10,893 INFO L226 Difference]: Without dead ends: 905 [2021-06-05 13:13:10,893 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:10,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2021-06-05 13:13:10,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 849. [2021-06-05 13:13:10,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 2.6014150943396226) internal successors, (2206), 848 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2206 transitions. [2021-06-05 13:13:10,901 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2206 transitions. Word has length 26 [2021-06-05 13:13:10,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:10,901 INFO L482 AbstractCegarLoop]: Abstraction has 849 states and 2206 transitions. [2021-06-05 13:13:10,901 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:10,901 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2206 transitions. [2021-06-05 13:13:10,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:10,902 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:10,902 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:10,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-06-05 13:13:10,902 INFO L430 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:10,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:10,902 INFO L82 PathProgramCache]: Analyzing trace with hash 974876576, now seen corresponding path program 321 times [2021-06-05 13:13:10,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:10,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005272670] [2021-06-05 13:13:10,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:10,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:10,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:10,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005272670] [2021-06-05 13:13:10,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005272670] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:10,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:10,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:10,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259934521] [2021-06-05 13:13:10,962 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:10,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:10,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:10,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:10,962 INFO L87 Difference]: Start difference. First operand 849 states and 2206 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:11,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:11,129 INFO L93 Difference]: Finished difference Result 951 states and 2457 transitions. [2021-06-05 13:13:11,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:11,129 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:11,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:11,130 INFO L225 Difference]: With dead ends: 951 [2021-06-05 13:13:11,130 INFO L226 Difference]: Without dead ends: 868 [2021-06-05 13:13:11,130 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:11,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-06-05 13:13:11,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 848. [2021-06-05 13:13:11,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 2.5985832349468714) internal successors, (2201), 847 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:11,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 2201 transitions. [2021-06-05 13:13:11,138 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 2201 transitions. Word has length 26 [2021-06-05 13:13:11,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:11,138 INFO L482 AbstractCegarLoop]: Abstraction has 848 states and 2201 transitions. [2021-06-05 13:13:11,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:11,138 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 2201 transitions. [2021-06-05 13:13:11,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:11,139 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:11,139 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:11,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-06-05 13:13:11,139 INFO L430 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:11,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:11,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1587711036, now seen corresponding path program 322 times [2021-06-05 13:13:11,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:11,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847663173] [2021-06-05 13:13:11,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:11,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:11,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847663173] [2021-06-05 13:13:11,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847663173] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:11,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:11,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:11,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138738820] [2021-06-05 13:13:11,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:11,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:11,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:11,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:11,217 INFO L87 Difference]: Start difference. First operand 848 states and 2201 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:11,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:11,381 INFO L93 Difference]: Finished difference Result 963 states and 2484 transitions. [2021-06-05 13:13:11,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:11,381 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:11,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:11,382 INFO L225 Difference]: With dead ends: 963 [2021-06-05 13:13:11,382 INFO L226 Difference]: Without dead ends: 853 [2021-06-05 13:13:11,382 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:11,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-06-05 13:13:11,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 831. [2021-06-05 13:13:11,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 2.603614457831325) internal successors, (2161), 830 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:11,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2161 transitions. [2021-06-05 13:13:11,390 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2161 transitions. Word has length 26 [2021-06-05 13:13:11,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:11,390 INFO L482 AbstractCegarLoop]: Abstraction has 831 states and 2161 transitions. [2021-06-05 13:13:11,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:11,390 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2161 transitions. [2021-06-05 13:13:11,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:11,391 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:11,391 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:11,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-06-05 13:13:11,391 INFO L430 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:11,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:11,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1318555276, now seen corresponding path program 323 times [2021-06-05 13:13:11,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:11,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779539678] [2021-06-05 13:13:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:11,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:11,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779539678] [2021-06-05 13:13:11,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779539678] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:11,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:11,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:11,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703304529] [2021-06-05 13:13:11,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:11,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:11,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:11,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:11,451 INFO L87 Difference]: Start difference. First operand 831 states and 2161 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:11,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:11,621 INFO L93 Difference]: Finished difference Result 964 states and 2472 transitions. [2021-06-05 13:13:11,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:11,622 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:11,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:11,623 INFO L225 Difference]: With dead ends: 964 [2021-06-05 13:13:11,623 INFO L226 Difference]: Without dead ends: 883 [2021-06-05 13:13:11,623 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:11,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-06-05 13:13:11,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 827. [2021-06-05 13:13:11,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 826 states have (on average 2.6053268765133173) internal successors, (2152), 826 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:11,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 2152 transitions. [2021-06-05 13:13:11,631 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 2152 transitions. Word has length 26 [2021-06-05 13:13:11,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:11,631 INFO L482 AbstractCegarLoop]: Abstraction has 827 states and 2152 transitions. [2021-06-05 13:13:11,631 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:11,631 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 2152 transitions. [2021-06-05 13:13:11,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:11,631 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:11,632 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:11,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-06-05 13:13:11,632 INFO L430 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:11,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:11,632 INFO L82 PathProgramCache]: Analyzing trace with hash 801382416, now seen corresponding path program 324 times [2021-06-05 13:13:11,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:11,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518816807] [2021-06-05 13:13:11,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:11,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:11,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518816807] [2021-06-05 13:13:11,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518816807] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:11,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:11,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:11,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095073540] [2021-06-05 13:13:11,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:11,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:11,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:11,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:11,710 INFO L87 Difference]: Start difference. First operand 827 states and 2152 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:11,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:11,897 INFO L93 Difference]: Finished difference Result 932 states and 2411 transitions. [2021-06-05 13:13:11,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:11,897 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:11,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:11,898 INFO L225 Difference]: With dead ends: 932 [2021-06-05 13:13:11,898 INFO L226 Difference]: Without dead ends: 823 [2021-06-05 13:13:11,898 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:11,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-06-05 13:13:11,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 803. [2021-06-05 13:13:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 2.614713216957606) internal successors, (2097), 802 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:11,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 2097 transitions. [2021-06-05 13:13:11,906 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 2097 transitions. Word has length 26 [2021-06-05 13:13:11,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:11,906 INFO L482 AbstractCegarLoop]: Abstraction has 803 states and 2097 transitions. [2021-06-05 13:13:11,906 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:11,906 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 2097 transitions. [2021-06-05 13:13:11,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:11,907 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:11,907 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:11,907 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-06-05 13:13:11,907 INFO L430 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:11,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:11,907 INFO L82 PathProgramCache]: Analyzing trace with hash -934523986, now seen corresponding path program 325 times [2021-06-05 13:13:11,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:11,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721433920] [2021-06-05 13:13:11,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:11,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:11,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721433920] [2021-06-05 13:13:11,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721433920] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:11,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:11,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:11,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143510681] [2021-06-05 13:13:11,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:11,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:11,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:11,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:11,975 INFO L87 Difference]: Start difference. First operand 803 states and 2097 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:12,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:12,137 INFO L93 Difference]: Finished difference Result 925 states and 2372 transitions. [2021-06-05 13:13:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:12,137 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:12,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:12,138 INFO L225 Difference]: With dead ends: 925 [2021-06-05 13:13:12,138 INFO L226 Difference]: Without dead ends: 828 [2021-06-05 13:13:12,138 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:12,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-06-05 13:13:12,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 788. [2021-06-05 13:13:12,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 2.60864040660737) internal successors, (2053), 787 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:12,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 2053 transitions. [2021-06-05 13:13:12,146 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 2053 transitions. Word has length 26 [2021-06-05 13:13:12,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:12,146 INFO L482 AbstractCegarLoop]: Abstraction has 788 states and 2053 transitions. [2021-06-05 13:13:12,146 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:12,146 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 2053 transitions. [2021-06-05 13:13:12,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:12,147 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:12,147 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:12,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-06-05 13:13:12,147 INFO L430 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:12,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:12,147 INFO L82 PathProgramCache]: Analyzing trace with hash -625259506, now seen corresponding path program 326 times [2021-06-05 13:13:12,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:12,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594510718] [2021-06-05 13:13:12,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:12,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:12,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594510718] [2021-06-05 13:13:12,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594510718] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:12,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:12,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:13:12,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351369075] [2021-06-05 13:13:12,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:13:12,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:12,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:13:12,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:12,197 INFO L87 Difference]: Start difference. First operand 788 states and 2053 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:12,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:12,326 INFO L93 Difference]: Finished difference Result 919 states and 2353 transitions. [2021-06-05 13:13:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:13:12,326 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:12,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:12,327 INFO L225 Difference]: With dead ends: 919 [2021-06-05 13:13:12,327 INFO L226 Difference]: Without dead ends: 826 [2021-06-05 13:13:12,327 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:12,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-06-05 13:13:12,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 788. [2021-06-05 13:13:12,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 2.6035578144853875) internal successors, (2049), 787 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:12,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 2049 transitions. [2021-06-05 13:13:12,335 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 2049 transitions. Word has length 26 [2021-06-05 13:13:12,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:12,335 INFO L482 AbstractCegarLoop]: Abstraction has 788 states and 2049 transitions. [2021-06-05 13:13:12,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:12,335 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 2049 transitions. [2021-06-05 13:13:12,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:12,336 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:12,336 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:12,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-06-05 13:13:12,336 INFO L430 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:12,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:12,336 INFO L82 PathProgramCache]: Analyzing trace with hash 244185102, now seen corresponding path program 327 times [2021-06-05 13:13:12,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:12,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684016206] [2021-06-05 13:13:12,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:12,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:12,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684016206] [2021-06-05 13:13:12,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684016206] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:12,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:12,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:12,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955687832] [2021-06-05 13:13:12,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:12,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:12,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:12,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:12,396 INFO L87 Difference]: Start difference. First operand 788 states and 2049 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:12,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:12,554 INFO L93 Difference]: Finished difference Result 935 states and 2392 transitions. [2021-06-05 13:13:12,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:12,555 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:12,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:12,555 INFO L225 Difference]: With dead ends: 935 [2021-06-05 13:13:12,555 INFO L226 Difference]: Without dead ends: 666 [2021-06-05 13:13:12,555 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:12,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-06-05 13:13:12,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 594. [2021-06-05 13:13:12,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 2.5548060708263067) internal successors, (1515), 593 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1515 transitions. [2021-06-05 13:13:12,561 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1515 transitions. Word has length 26 [2021-06-05 13:13:12,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:12,561 INFO L482 AbstractCegarLoop]: Abstraction has 594 states and 1515 transitions. [2021-06-05 13:13:12,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:12,561 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1515 transitions. [2021-06-05 13:13:12,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:12,562 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:12,562 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:12,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-06-05 13:13:12,562 INFO L430 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:12,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:12,562 INFO L82 PathProgramCache]: Analyzing trace with hash 256125006, now seen corresponding path program 328 times [2021-06-05 13:13:12,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:12,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612979360] [2021-06-05 13:13:12,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:12,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:12,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:12,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612979360] [2021-06-05 13:13:12,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612979360] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:12,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:12,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:12,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304272701] [2021-06-05 13:13:12,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:12,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:12,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:12,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:12,623 INFO L87 Difference]: Start difference. First operand 594 states and 1515 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:12,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:12,786 INFO L93 Difference]: Finished difference Result 734 states and 1848 transitions. [2021-06-05 13:13:12,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:12,787 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:12,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:12,787 INFO L225 Difference]: With dead ends: 734 [2021-06-05 13:13:12,788 INFO L226 Difference]: Without dead ends: 633 [2021-06-05 13:13:12,788 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:12,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-06-05 13:13:12,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 570. [2021-06-05 13:13:12,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 2.5606326889279436) internal successors, (1457), 569 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:12,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1457 transitions. [2021-06-05 13:13:12,793 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1457 transitions. Word has length 26 [2021-06-05 13:13:12,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:12,793 INFO L482 AbstractCegarLoop]: Abstraction has 570 states and 1457 transitions. [2021-06-05 13:13:12,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:12,793 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1457 transitions. [2021-06-05 13:13:12,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:12,794 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:12,794 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:12,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-06-05 13:13:12,794 INFO L430 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:12,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:12,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1125569614, now seen corresponding path program 329 times [2021-06-05 13:13:12,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:12,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906309864] [2021-06-05 13:13:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:12,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:12,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:12,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906309864] [2021-06-05 13:13:12,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906309864] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:12,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:12,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:12,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75515358] [2021-06-05 13:13:12,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:12,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:12,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:12,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:12,854 INFO L87 Difference]: Start difference. First operand 570 states and 1457 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:13,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:13,030 INFO L93 Difference]: Finished difference Result 694 states and 1767 transitions. [2021-06-05 13:13:13,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:13,030 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:13,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:13,031 INFO L225 Difference]: With dead ends: 694 [2021-06-05 13:13:13,031 INFO L226 Difference]: Without dead ends: 603 [2021-06-05 13:13:13,031 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:13,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-06-05 13:13:13,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 587. [2021-06-05 13:13:13,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 586 states have (on average 2.5580204778157) internal successors, (1499), 586 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:13,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 1499 transitions. [2021-06-05 13:13:13,036 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 1499 transitions. Word has length 26 [2021-06-05 13:13:13,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:13,036 INFO L482 AbstractCegarLoop]: Abstraction has 587 states and 1499 transitions. [2021-06-05 13:13:13,036 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:13,037 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 1499 transitions. [2021-06-05 13:13:13,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:13,037 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:13,037 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:13,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-06-05 13:13:13,037 INFO L430 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:13,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:13,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1937772202, now seen corresponding path program 330 times [2021-06-05 13:13:13,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:13,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136911341] [2021-06-05 13:13:13,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:13,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:13,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136911341] [2021-06-05 13:13:13,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136911341] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:13,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:13,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:13,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914466320] [2021-06-05 13:13:13,097 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:13,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:13,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:13,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:13,097 INFO L87 Difference]: Start difference. First operand 587 states and 1499 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:13,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:13,271 INFO L93 Difference]: Finished difference Result 696 states and 1770 transitions. [2021-06-05 13:13:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:13,272 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:13,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:13,272 INFO L225 Difference]: With dead ends: 696 [2021-06-05 13:13:13,272 INFO L226 Difference]: Without dead ends: 600 [2021-06-05 13:13:13,273 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:13,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-06-05 13:13:13,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 582. [2021-06-05 13:13:13,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 581 states have (on average 2.5559380378657486) internal successors, (1485), 581 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:13,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1485 transitions. [2021-06-05 13:13:13,278 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1485 transitions. Word has length 26 [2021-06-05 13:13:13,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:13,278 INFO L482 AbstractCegarLoop]: Abstraction has 582 states and 1485 transitions. [2021-06-05 13:13:13,278 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:13,278 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1485 transitions. [2021-06-05 13:13:13,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:13,279 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:13,279 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:13,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-06-05 13:13:13,279 INFO L430 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:13,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:13,279 INFO L82 PathProgramCache]: Analyzing trace with hash 908358482, now seen corresponding path program 331 times [2021-06-05 13:13:13,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:13,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822742830] [2021-06-05 13:13:13,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:13,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:13,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:13,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822742830] [2021-06-05 13:13:13,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822742830] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:13,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:13,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:13,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225552523] [2021-06-05 13:13:13,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:13,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:13,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:13,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:13,353 INFO L87 Difference]: Start difference. First operand 582 states and 1485 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:13,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:13,517 INFO L93 Difference]: Finished difference Result 709 states and 1796 transitions. [2021-06-05 13:13:13,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:13,518 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:13,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:13,518 INFO L225 Difference]: With dead ends: 709 [2021-06-05 13:13:13,518 INFO L226 Difference]: Without dead ends: 586 [2021-06-05 13:13:13,518 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:13,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-06-05 13:13:13,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 570. [2021-06-05 13:13:13,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 2.555360281195079) internal successors, (1454), 569 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:13,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1454 transitions. [2021-06-05 13:13:13,524 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1454 transitions. Word has length 26 [2021-06-05 13:13:13,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:13,524 INFO L482 AbstractCegarLoop]: Abstraction has 570 states and 1454 transitions. [2021-06-05 13:13:13,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:13,524 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1454 transitions. [2021-06-05 13:13:13,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:13,525 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:13,525 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:13,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-06-05 13:13:13,525 INFO L430 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:13,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:13,525 INFO L82 PathProgramCache]: Analyzing trace with hash 48042988, now seen corresponding path program 332 times [2021-06-05 13:13:13,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:13,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053409175] [2021-06-05 13:13:13,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:13,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:13,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:13,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053409175] [2021-06-05 13:13:13,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053409175] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:13,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:13,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:13,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629689026] [2021-06-05 13:13:13,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:13,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:13,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:13,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:13,585 INFO L87 Difference]: Start difference. First operand 570 states and 1454 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:13,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:13,754 INFO L93 Difference]: Finished difference Result 694 states and 1757 transitions. [2021-06-05 13:13:13,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:13,754 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:13,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:13,755 INFO L225 Difference]: With dead ends: 694 [2021-06-05 13:13:13,755 INFO L226 Difference]: Without dead ends: 613 [2021-06-05 13:13:13,755 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:13,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-06-05 13:13:13,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 569. [2021-06-05 13:13:13,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 2.556338028169014) internal successors, (1452), 568 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:13,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1452 transitions. [2021-06-05 13:13:13,761 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1452 transitions. Word has length 26 [2021-06-05 13:13:13,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:13,761 INFO L482 AbstractCegarLoop]: Abstraction has 569 states and 1452 transitions. [2021-06-05 13:13:13,761 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:13,761 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1452 transitions. [2021-06-05 13:13:13,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:13,761 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:13,761 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:13,762 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-06-05 13:13:13,762 INFO L430 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:13,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:13,762 INFO L82 PathProgramCache]: Analyzing trace with hash 917487596, now seen corresponding path program 333 times [2021-06-05 13:13:13,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:13,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818519277] [2021-06-05 13:13:13,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:13,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:13,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818519277] [2021-06-05 13:13:13,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818519277] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:13,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:13,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:13,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645822840] [2021-06-05 13:13:13,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:13,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:13,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:13,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:13,822 INFO L87 Difference]: Start difference. First operand 569 states and 1452 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:13,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:13,999 INFO L93 Difference]: Finished difference Result 696 states and 1757 transitions. [2021-06-05 13:13:13,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:13,999 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:14,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:14,000 INFO L225 Difference]: With dead ends: 696 [2021-06-05 13:13:14,000 INFO L226 Difference]: Without dead ends: 605 [2021-06-05 13:13:14,000 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:14,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-06-05 13:13:14,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 576. [2021-06-05 13:13:14,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 2.554782608695652) internal successors, (1469), 575 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:14,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1469 transitions. [2021-06-05 13:13:14,006 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1469 transitions. Word has length 26 [2021-06-05 13:13:14,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:14,006 INFO L482 AbstractCegarLoop]: Abstraction has 576 states and 1469 transitions. [2021-06-05 13:13:14,006 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:14,006 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1469 transitions. [2021-06-05 13:13:14,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:14,006 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:14,007 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:14,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-06-05 13:13:14,007 INFO L430 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:14,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:14,007 INFO L82 PathProgramCache]: Analyzing trace with hash -538070062, now seen corresponding path program 334 times [2021-06-05 13:13:14,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:14,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450482678] [2021-06-05 13:13:14,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:14,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:14,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450482678] [2021-06-05 13:13:14,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450482678] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:14,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:14,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:14,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394070232] [2021-06-05 13:13:14,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:14,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:14,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:14,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:14,072 INFO L87 Difference]: Start difference. First operand 576 states and 1469 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:14,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:14,244 INFO L93 Difference]: Finished difference Result 692 states and 1748 transitions. [2021-06-05 13:13:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:14,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:14,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:14,245 INFO L225 Difference]: With dead ends: 692 [2021-06-05 13:13:14,245 INFO L226 Difference]: Without dead ends: 599 [2021-06-05 13:13:14,245 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:14,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-06-05 13:13:14,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 572. [2021-06-05 13:13:14,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 2.555166374781086) internal successors, (1459), 571 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:14,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1459 transitions. [2021-06-05 13:13:14,251 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1459 transitions. Word has length 26 [2021-06-05 13:13:14,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:14,251 INFO L482 AbstractCegarLoop]: Abstraction has 572 states and 1459 transitions. [2021-06-05 13:13:14,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:14,251 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1459 transitions. [2021-06-05 13:13:14,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:14,251 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:14,251 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:14,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-06-05 13:13:14,251 INFO L430 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:14,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:14,252 INFO L82 PathProgramCache]: Analyzing trace with hash -158764978, now seen corresponding path program 335 times [2021-06-05 13:13:14,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:14,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060061530] [2021-06-05 13:13:14,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:14,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:14,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:14,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060061530] [2021-06-05 13:13:14,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060061530] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:14,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:14,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:14,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671009526] [2021-06-05 13:13:14,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:14,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:14,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:14,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:14,311 INFO L87 Difference]: Start difference. First operand 572 states and 1459 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:14,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:14,482 INFO L93 Difference]: Finished difference Result 712 states and 1795 transitions. [2021-06-05 13:13:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:14,482 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:14,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:14,483 INFO L225 Difference]: With dead ends: 712 [2021-06-05 13:13:14,483 INFO L226 Difference]: Without dead ends: 631 [2021-06-05 13:13:14,483 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:14,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2021-06-05 13:13:14,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 574. [2021-06-05 13:13:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 2.5636998254799304) internal successors, (1469), 573 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:14,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 1469 transitions. [2021-06-05 13:13:14,489 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 1469 transitions. Word has length 26 [2021-06-05 13:13:14,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:14,489 INFO L482 AbstractCegarLoop]: Abstraction has 574 states and 1469 transitions. [2021-06-05 13:13:14,489 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:14,489 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 1469 transitions. [2021-06-05 13:13:14,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:14,489 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:14,489 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:14,489 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-06-05 13:13:14,489 INFO L430 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:14,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:14,490 INFO L82 PathProgramCache]: Analyzing trace with hash 710679630, now seen corresponding path program 336 times [2021-06-05 13:13:14,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:14,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077076282] [2021-06-05 13:13:14,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:14,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:14,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077076282] [2021-06-05 13:13:14,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077076282] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:14,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:14,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:14,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423599173] [2021-06-05 13:13:14,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:14,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:14,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:14,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:14,550 INFO L87 Difference]: Start difference. First operand 574 states and 1469 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:14,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:14,729 INFO L93 Difference]: Finished difference Result 690 states and 1756 transitions. [2021-06-05 13:13:14,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:14,729 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:14,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:14,730 INFO L225 Difference]: With dead ends: 690 [2021-06-05 13:13:14,730 INFO L226 Difference]: Without dead ends: 599 [2021-06-05 13:13:14,730 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:14,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-06-05 13:13:14,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 577. [2021-06-05 13:13:14,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 2.560763888888889) internal successors, (1475), 576 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1475 transitions. [2021-06-05 13:13:14,737 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1475 transitions. Word has length 26 [2021-06-05 13:13:14,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:14,737 INFO L482 AbstractCegarLoop]: Abstraction has 577 states and 1475 transitions. [2021-06-05 13:13:14,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:14,737 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1475 transitions. [2021-06-05 13:13:14,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:14,737 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:14,737 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:14,738 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-06-05 13:13:14,738 INFO L430 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:14,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:14,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1663603796, now seen corresponding path program 337 times [2021-06-05 13:13:14,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:14,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005744029] [2021-06-05 13:13:14,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:14,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:14,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:14,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005744029] [2021-06-05 13:13:14,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005744029] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:14,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:14,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:14,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581859966] [2021-06-05 13:13:14,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:14,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:14,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:14,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:14,809 INFO L87 Difference]: Start difference. First operand 577 states and 1475 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:14,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:14,977 INFO L93 Difference]: Finished difference Result 686 states and 1730 transitions. [2021-06-05 13:13:14,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:14,977 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:14,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:14,978 INFO L225 Difference]: With dead ends: 686 [2021-06-05 13:13:14,978 INFO L226 Difference]: Without dead ends: 597 [2021-06-05 13:13:14,978 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:14,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-06-05 13:13:14,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 575. [2021-06-05 13:13:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 2.5557491289198606) internal successors, (1467), 574 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:14,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1467 transitions. [2021-06-05 13:13:14,983 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1467 transitions. Word has length 26 [2021-06-05 13:13:14,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:14,983 INFO L482 AbstractCegarLoop]: Abstraction has 575 states and 1467 transitions. [2021-06-05 13:13:14,983 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:14,984 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1467 transitions. [2021-06-05 13:13:14,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:14,984 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:14,984 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:14,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-06-05 13:13:14,984 INFO L430 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:14,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:14,984 INFO L82 PathProgramCache]: Analyzing trace with hash 456333896, now seen corresponding path program 338 times [2021-06-05 13:13:14,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:14,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638922909] [2021-06-05 13:13:14,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:15,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:15,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638922909] [2021-06-05 13:13:15,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638922909] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:15,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:15,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:15,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657726171] [2021-06-05 13:13:15,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:15,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:15,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:15,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:15,062 INFO L87 Difference]: Start difference. First operand 575 states and 1467 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:15,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:15,256 INFO L93 Difference]: Finished difference Result 678 states and 1726 transitions. [2021-06-05 13:13:15,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:15,257 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:15,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:15,257 INFO L225 Difference]: With dead ends: 678 [2021-06-05 13:13:15,257 INFO L226 Difference]: Without dead ends: 582 [2021-06-05 13:13:15,257 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:15,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-06-05 13:13:15,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 570. [2021-06-05 13:13:15,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 2.5571177504393674) internal successors, (1455), 569 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:15,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1455 transitions. [2021-06-05 13:13:15,263 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1455 transitions. Word has length 26 [2021-06-05 13:13:15,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:15,263 INFO L482 AbstractCegarLoop]: Abstraction has 570 states and 1455 transitions. [2021-06-05 13:13:15,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:15,263 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1455 transitions. [2021-06-05 13:13:15,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:15,264 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:15,264 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:15,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-06-05 13:13:15,264 INFO L430 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:15,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:15,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1601393100, now seen corresponding path program 339 times [2021-06-05 13:13:15,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:15,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188110520] [2021-06-05 13:13:15,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:15,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:15,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:15,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188110520] [2021-06-05 13:13:15,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188110520] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:15,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:15,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:15,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740926010] [2021-06-05 13:13:15,324 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:15,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:15,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:15,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:15,324 INFO L87 Difference]: Start difference. First operand 570 states and 1455 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:15,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:15,497 INFO L93 Difference]: Finished difference Result 701 states and 1771 transitions. [2021-06-05 13:13:15,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:15,498 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:15,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:15,499 INFO L225 Difference]: With dead ends: 701 [2021-06-05 13:13:15,499 INFO L226 Difference]: Without dead ends: 610 [2021-06-05 13:13:15,499 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:15,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-06-05 13:13:15,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 585. [2021-06-05 13:13:15,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 2.547945205479452) internal successors, (1488), 584 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:15,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1488 transitions. [2021-06-05 13:13:15,505 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1488 transitions. Word has length 26 [2021-06-05 13:13:15,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:15,505 INFO L482 AbstractCegarLoop]: Abstraction has 585 states and 1488 transitions. [2021-06-05 13:13:15,505 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:15,505 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1488 transitions. [2021-06-05 13:13:15,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:15,505 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:15,505 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:15,505 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-06-05 13:13:15,505 INFO L430 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:15,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:15,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1301429650, now seen corresponding path program 340 times [2021-06-05 13:13:15,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:15,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261583925] [2021-06-05 13:13:15,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:15,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:15,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:15,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261583925] [2021-06-05 13:13:15,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261583925] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:15,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:15,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:15,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561257931] [2021-06-05 13:13:15,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:15,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:15,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:15,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:15,582 INFO L87 Difference]: Start difference. First operand 585 states and 1488 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:15,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:15,770 INFO L93 Difference]: Finished difference Result 693 states and 1757 transitions. [2021-06-05 13:13:15,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:15,770 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:15,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:15,771 INFO L225 Difference]: With dead ends: 693 [2021-06-05 13:13:15,771 INFO L226 Difference]: Without dead ends: 596 [2021-06-05 13:13:15,771 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:15,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-06-05 13:13:15,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 583. [2021-06-05 13:13:15,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 2.5481099656357387) internal successors, (1483), 582 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:15,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1483 transitions. [2021-06-05 13:13:15,776 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1483 transitions. Word has length 26 [2021-06-05 13:13:15,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:15,777 INFO L482 AbstractCegarLoop]: Abstraction has 583 states and 1483 transitions. [2021-06-05 13:13:15,777 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:15,777 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1483 transitions. [2021-06-05 13:13:15,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:15,777 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:15,777 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:15,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-06-05 13:13:15,777 INFO L430 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:15,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:15,778 INFO L82 PathProgramCache]: Analyzing trace with hash 392582440, now seen corresponding path program 341 times [2021-06-05 13:13:15,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:15,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425342862] [2021-06-05 13:13:15,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:15,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:15,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:15,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425342862] [2021-06-05 13:13:15,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425342862] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:15,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:15,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:15,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269382419] [2021-06-05 13:13:15,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:15,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:15,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:15,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:15,848 INFO L87 Difference]: Start difference. First operand 583 states and 1483 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:16,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:16,014 INFO L93 Difference]: Finished difference Result 728 states and 1837 transitions. [2021-06-05 13:13:16,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:16,014 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:16,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:16,015 INFO L225 Difference]: With dead ends: 728 [2021-06-05 13:13:16,015 INFO L226 Difference]: Without dead ends: 613 [2021-06-05 13:13:16,015 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:16,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-06-05 13:13:16,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 583. [2021-06-05 13:13:16,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 2.5343642611683848) internal successors, (1475), 582 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:16,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1475 transitions. [2021-06-05 13:13:16,021 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1475 transitions. Word has length 26 [2021-06-05 13:13:16,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:16,021 INFO L482 AbstractCegarLoop]: Abstraction has 583 states and 1475 transitions. [2021-06-05 13:13:16,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:16,021 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1475 transitions. [2021-06-05 13:13:16,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:16,021 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:16,021 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:16,021 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-06-05 13:13:16,022 INFO L430 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:16,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:16,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1632796106, now seen corresponding path program 342 times [2021-06-05 13:13:16,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:16,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855015122] [2021-06-05 13:13:16,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:16,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:16,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:16,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855015122] [2021-06-05 13:13:16,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855015122] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:16,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:16,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:16,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365278692] [2021-06-05 13:13:16,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:16,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:16,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:16,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:16,082 INFO L87 Difference]: Start difference. First operand 583 states and 1475 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:16,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:16,252 INFO L93 Difference]: Finished difference Result 717 states and 1804 transitions. [2021-06-05 13:13:16,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:16,252 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:16,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:16,253 INFO L225 Difference]: With dead ends: 717 [2021-06-05 13:13:16,253 INFO L226 Difference]: Without dead ends: 626 [2021-06-05 13:13:16,253 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:16,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-06-05 13:13:16,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 583. [2021-06-05 13:13:16,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 2.5343642611683848) internal successors, (1475), 582 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:16,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1475 transitions. [2021-06-05 13:13:16,259 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1475 transitions. Word has length 26 [2021-06-05 13:13:16,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:16,259 INFO L482 AbstractCegarLoop]: Abstraction has 583 states and 1475 transitions. [2021-06-05 13:13:16,259 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:16,259 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1475 transitions. [2021-06-05 13:13:16,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:16,260 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:16,260 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:16,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-06-05 13:13:16,260 INFO L430 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:16,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:16,260 INFO L82 PathProgramCache]: Analyzing trace with hash 240651560, now seen corresponding path program 343 times [2021-06-05 13:13:16,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:16,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945675451] [2021-06-05 13:13:16,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:16,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:16,329 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:16,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945675451] [2021-06-05 13:13:16,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945675451] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:16,329 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:16,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:16,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151610752] [2021-06-05 13:13:16,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:16,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:16,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:16,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:16,330 INFO L87 Difference]: Start difference. First operand 583 states and 1475 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:16,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:16,524 INFO L93 Difference]: Finished difference Result 697 states and 1755 transitions. [2021-06-05 13:13:16,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:16,524 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:16,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:16,525 INFO L225 Difference]: With dead ends: 697 [2021-06-05 13:13:16,525 INFO L226 Difference]: Without dead ends: 590 [2021-06-05 13:13:16,525 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:16,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-06-05 13:13:16,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 566. [2021-06-05 13:13:16,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 2.5256637168141594) internal successors, (1427), 565 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:16,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 1427 transitions. [2021-06-05 13:13:16,533 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 1427 transitions. Word has length 26 [2021-06-05 13:13:16,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:16,533 INFO L482 AbstractCegarLoop]: Abstraction has 566 states and 1427 transitions. [2021-06-05 13:13:16,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:16,534 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1427 transitions. [2021-06-05 13:13:16,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:16,534 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:16,534 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:16,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-06-05 13:13:16,534 INFO L430 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:16,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:16,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1693780104, now seen corresponding path program 344 times [2021-06-05 13:13:16,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:16,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038617931] [2021-06-05 13:13:16,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:16,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:16,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038617931] [2021-06-05 13:13:16,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038617931] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:16,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:16,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:16,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662698116] [2021-06-05 13:13:16,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:16,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:16,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:16,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:16,603 INFO L87 Difference]: Start difference. First operand 566 states and 1427 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:16,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:16,802 INFO L93 Difference]: Finished difference Result 710 states and 1782 transitions. [2021-06-05 13:13:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:16,802 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:16,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:16,803 INFO L225 Difference]: With dead ends: 710 [2021-06-05 13:13:16,803 INFO L226 Difference]: Without dead ends: 593 [2021-06-05 13:13:16,803 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:16,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-06-05 13:13:16,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2021-06-05 13:13:16,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 2.501689189189189) internal successors, (1481), 592 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:16,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1481 transitions. [2021-06-05 13:13:16,811 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1481 transitions. Word has length 26 [2021-06-05 13:13:16,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:16,811 INFO L482 AbstractCegarLoop]: Abstraction has 593 states and 1481 transitions. [2021-06-05 13:13:16,811 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:16,811 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1481 transitions. [2021-06-05 13:13:16,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:16,812 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:16,812 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:16,812 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-06-05 13:13:16,812 INFO L430 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:16,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:16,812 INFO L82 PathProgramCache]: Analyzing trace with hash -881577516, now seen corresponding path program 345 times [2021-06-05 13:13:16,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:16,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288333507] [2021-06-05 13:13:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:16,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:16,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288333507] [2021-06-05 13:13:16,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288333507] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:16,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:16,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:16,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786882125] [2021-06-05 13:13:16,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:16,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:16,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:16,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:16,882 INFO L87 Difference]: Start difference. First operand 593 states and 1481 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:17,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:17,089 INFO L93 Difference]: Finished difference Result 725 states and 1802 transitions. [2021-06-05 13:13:17,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:17,089 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:17,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:17,090 INFO L225 Difference]: With dead ends: 725 [2021-06-05 13:13:17,090 INFO L226 Difference]: Without dead ends: 603 [2021-06-05 13:13:17,090 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:17,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-06-05 13:13:17,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 593. [2021-06-05 13:13:17,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 2.4966216216216215) internal successors, (1478), 592 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:17,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1478 transitions. [2021-06-05 13:13:17,102 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1478 transitions. Word has length 26 [2021-06-05 13:13:17,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:17,102 INFO L482 AbstractCegarLoop]: Abstraction has 593 states and 1478 transitions. [2021-06-05 13:13:17,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1478 transitions. [2021-06-05 13:13:17,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:17,103 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:17,103 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:17,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-06-05 13:13:17,103 INFO L430 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:17,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:17,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1910991236, now seen corresponding path program 346 times [2021-06-05 13:13:17,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:17,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259431627] [2021-06-05 13:13:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:17,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:17,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259431627] [2021-06-05 13:13:17,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259431627] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:17,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:17,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:17,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472206254] [2021-06-05 13:13:17,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:17,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:17,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:17,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:17,163 INFO L87 Difference]: Start difference. First operand 593 states and 1478 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:17,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:17,321 INFO L93 Difference]: Finished difference Result 740 states and 1834 transitions. [2021-06-05 13:13:17,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:17,321 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:17,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:17,322 INFO L225 Difference]: With dead ends: 740 [2021-06-05 13:13:17,322 INFO L226 Difference]: Without dead ends: 591 [2021-06-05 13:13:17,322 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:17,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-06-05 13:13:17,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 581. [2021-06-05 13:13:17,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 2.486206896551724) internal successors, (1442), 580 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:17,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1442 transitions. [2021-06-05 13:13:17,328 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1442 transitions. Word has length 26 [2021-06-05 13:13:17,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:17,328 INFO L482 AbstractCegarLoop]: Abstraction has 581 states and 1442 transitions. [2021-06-05 13:13:17,328 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:17,328 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1442 transitions. [2021-06-05 13:13:17,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:17,328 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:17,328 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:17,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-06-05 13:13:17,328 INFO L430 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:17,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:17,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1239429736, now seen corresponding path program 347 times [2021-06-05 13:13:17,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:17,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213293510] [2021-06-05 13:13:17,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:17,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:17,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:17,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213293510] [2021-06-05 13:13:17,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213293510] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:17,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:17,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:17,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71836579] [2021-06-05 13:13:17,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:17,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:17,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:17,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:17,389 INFO L87 Difference]: Start difference. First operand 581 states and 1442 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:17,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:17,551 INFO L93 Difference]: Finished difference Result 702 states and 1738 transitions. [2021-06-05 13:13:17,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:17,551 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:17,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:17,552 INFO L225 Difference]: With dead ends: 702 [2021-06-05 13:13:17,552 INFO L226 Difference]: Without dead ends: 558 [2021-06-05 13:13:17,552 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:17,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-06-05 13:13:17,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 542. [2021-06-05 13:13:17,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 2.4935304990757854) internal successors, (1349), 541 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:17,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1349 transitions. [2021-06-05 13:13:17,557 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1349 transitions. Word has length 26 [2021-06-05 13:13:17,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:17,557 INFO L482 AbstractCegarLoop]: Abstraction has 542 states and 1349 transitions. [2021-06-05 13:13:17,557 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:17,557 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1349 transitions. [2021-06-05 13:13:17,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:17,558 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:17,558 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:17,558 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-06-05 13:13:17,558 INFO L430 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:17,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:17,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1233750690, now seen corresponding path program 348 times [2021-06-05 13:13:17,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:17,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512633774] [2021-06-05 13:13:17,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:17,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:17,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:17,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512633774] [2021-06-05 13:13:17,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512633774] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:17,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:17,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:17,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466112817] [2021-06-05 13:13:17,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:17,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:17,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:17,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:17,619 INFO L87 Difference]: Start difference. First operand 542 states and 1349 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:17,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:17,792 INFO L93 Difference]: Finished difference Result 644 states and 1595 transitions. [2021-06-05 13:13:17,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:17,793 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:17,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:17,793 INFO L225 Difference]: With dead ends: 644 [2021-06-05 13:13:17,794 INFO L226 Difference]: Without dead ends: 561 [2021-06-05 13:13:17,794 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:17,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-06-05 13:13:17,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 530. [2021-06-05 13:13:17,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 2.4688090737240076) internal successors, (1306), 529 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:17,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1306 transitions. [2021-06-05 13:13:17,799 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1306 transitions. Word has length 26 [2021-06-05 13:13:17,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:17,799 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1306 transitions. [2021-06-05 13:13:17,799 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:17,799 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1306 transitions. [2021-06-05 13:13:17,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:17,799 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:17,799 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:17,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-06-05 13:13:17,800 INFO L430 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:17,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:17,800 INFO L82 PathProgramCache]: Analyzing trace with hash -364306082, now seen corresponding path program 349 times [2021-06-05 13:13:17,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:17,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128402314] [2021-06-05 13:13:17,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:17,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:17,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:17,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128402314] [2021-06-05 13:13:17,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128402314] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:17,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:17,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:17,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982287124] [2021-06-05 13:13:17,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:17,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:17,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:17,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:17,861 INFO L87 Difference]: Start difference. First operand 530 states and 1306 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:18,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:18,035 INFO L93 Difference]: Finished difference Result 663 states and 1624 transitions. [2021-06-05 13:13:18,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:18,035 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:18,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:18,036 INFO L225 Difference]: With dead ends: 663 [2021-06-05 13:13:18,036 INFO L226 Difference]: Without dead ends: 572 [2021-06-05 13:13:18,036 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:18,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-06-05 13:13:18,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 536. [2021-06-05 13:13:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 2.457943925233645) internal successors, (1315), 535 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:18,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1315 transitions. [2021-06-05 13:13:18,041 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1315 transitions. Word has length 26 [2021-06-05 13:13:18,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:18,041 INFO L482 AbstractCegarLoop]: Abstraction has 536 states and 1315 transitions. [2021-06-05 13:13:18,041 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:18,041 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1315 transitions. [2021-06-05 13:13:18,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:18,042 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:18,042 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:18,042 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-06-05 13:13:18,042 INFO L430 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:18,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:18,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1556377788, now seen corresponding path program 350 times [2021-06-05 13:13:18,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:18,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361302449] [2021-06-05 13:13:18,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:18,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:18,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361302449] [2021-06-05 13:13:18,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361302449] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:18,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:18,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:18,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185046125] [2021-06-05 13:13:18,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:18,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:18,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:18,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:18,103 INFO L87 Difference]: Start difference. First operand 536 states and 1315 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:18,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:18,273 INFO L93 Difference]: Finished difference Result 635 states and 1558 transitions. [2021-06-05 13:13:18,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:18,273 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:18,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:18,274 INFO L225 Difference]: With dead ends: 635 [2021-06-05 13:13:18,274 INFO L226 Difference]: Without dead ends: 550 [2021-06-05 13:13:18,274 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:18,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-06-05 13:13:18,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 539. [2021-06-05 13:13:18,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 2.453531598513011) internal successors, (1320), 538 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:18,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 1320 transitions. [2021-06-05 13:13:18,279 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 1320 transitions. Word has length 26 [2021-06-05 13:13:18,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:18,279 INFO L482 AbstractCegarLoop]: Abstraction has 539 states and 1320 transitions. [2021-06-05 13:13:18,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:18,279 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 1320 transitions. [2021-06-05 13:13:18,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:18,280 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:18,280 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:18,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-06-05 13:13:18,280 INFO L430 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:18,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:18,280 INFO L82 PathProgramCache]: Analyzing trace with hash -618651816, now seen corresponding path program 351 times [2021-06-05 13:13:18,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:18,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402356804] [2021-06-05 13:13:18,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:18,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:18,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:18,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402356804] [2021-06-05 13:13:18,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402356804] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:18,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:18,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:18,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975916202] [2021-06-05 13:13:18,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:18,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:18,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:18,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:18,341 INFO L87 Difference]: Start difference. First operand 539 states and 1320 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:18,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:18,512 INFO L93 Difference]: Finished difference Result 642 states and 1579 transitions. [2021-06-05 13:13:18,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:18,512 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:18,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:18,512 INFO L225 Difference]: With dead ends: 642 [2021-06-05 13:13:18,513 INFO L226 Difference]: Without dead ends: 546 [2021-06-05 13:13:18,513 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:18,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-06-05 13:13:18,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 536. [2021-06-05 13:13:18,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 2.4560747663551403) internal successors, (1314), 535 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1314 transitions. [2021-06-05 13:13:18,517 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1314 transitions. Word has length 26 [2021-06-05 13:13:18,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:18,518 INFO L482 AbstractCegarLoop]: Abstraction has 536 states and 1314 transitions. [2021-06-05 13:13:18,518 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:18,518 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1314 transitions. [2021-06-05 13:13:18,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:18,518 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:18,518 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:18,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-06-05 13:13:18,518 INFO L430 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:18,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:18,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1505935746, now seen corresponding path program 352 times [2021-06-05 13:13:18,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:18,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458845094] [2021-06-05 13:13:18,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:18,593 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:18,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458845094] [2021-06-05 13:13:18,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458845094] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:18,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:18,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:18,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390782842] [2021-06-05 13:13:18,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:18,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:18,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:18,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:18,593 INFO L87 Difference]: Start difference. First operand 536 states and 1314 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:18,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:18,753 INFO L93 Difference]: Finished difference Result 646 states and 1576 transitions. [2021-06-05 13:13:18,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:18,754 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:18,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:18,754 INFO L225 Difference]: With dead ends: 646 [2021-06-05 13:13:18,754 INFO L226 Difference]: Without dead ends: 559 [2021-06-05 13:13:18,754 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:18,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-06-05 13:13:18,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 530. [2021-06-05 13:13:18,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 2.448015122873346) internal successors, (1295), 529 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:18,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1295 transitions. [2021-06-05 13:13:18,760 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1295 transitions. Word has length 26 [2021-06-05 13:13:18,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:18,760 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1295 transitions. [2021-06-05 13:13:18,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:18,760 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1295 transitions. [2021-06-05 13:13:18,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:18,761 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:18,761 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:18,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-06-05 13:13:18,761 INFO L430 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:18,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:18,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1618588484, now seen corresponding path program 353 times [2021-06-05 13:13:18,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:18,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393175945] [2021-06-05 13:13:18,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:18,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:18,833 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:18,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393175945] [2021-06-05 13:13:18,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393175945] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:18,833 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:18,833 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:18,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581956605] [2021-06-05 13:13:18,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:18,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:18,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:18,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:18,834 INFO L87 Difference]: Start difference. First operand 530 states and 1295 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:19,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:19,012 INFO L93 Difference]: Finished difference Result 658 states and 1602 transitions. [2021-06-05 13:13:19,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:19,012 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:19,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:19,013 INFO L225 Difference]: With dead ends: 658 [2021-06-05 13:13:19,013 INFO L226 Difference]: Without dead ends: 567 [2021-06-05 13:13:19,013 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:19,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-06-05 13:13:19,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 530. [2021-06-05 13:13:19,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 2.448015122873346) internal successors, (1295), 529 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:19,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1295 transitions. [2021-06-05 13:13:19,018 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1295 transitions. Word has length 26 [2021-06-05 13:13:19,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:19,018 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1295 transitions. [2021-06-05 13:13:19,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:19,018 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1295 transitions. [2021-06-05 13:13:19,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:19,019 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:19,019 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:19,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-06-05 13:13:19,019 INFO L430 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:19,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:19,019 INFO L82 PathProgramCache]: Analyzing trace with hash 226443938, now seen corresponding path program 354 times [2021-06-05 13:13:19,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:19,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274425685] [2021-06-05 13:13:19,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:19,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:19,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274425685] [2021-06-05 13:13:19,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274425685] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:19,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:19,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:19,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597674562] [2021-06-05 13:13:19,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:19,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:19,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:19,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:19,078 INFO L87 Difference]: Start difference. First operand 530 states and 1295 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:19,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:19,246 INFO L93 Difference]: Finished difference Result 638 states and 1564 transitions. [2021-06-05 13:13:19,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:19,246 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:19,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:19,247 INFO L225 Difference]: With dead ends: 638 [2021-06-05 13:13:19,247 INFO L226 Difference]: Without dead ends: 541 [2021-06-05 13:13:19,247 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:19,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-06-05 13:13:19,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 528. [2021-06-05 13:13:19,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 2.447817836812144) internal successors, (1290), 527 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:19,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1290 transitions. [2021-06-05 13:13:19,252 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1290 transitions. Word has length 26 [2021-06-05 13:13:19,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:19,252 INFO L482 AbstractCegarLoop]: Abstraction has 528 states and 1290 transitions. [2021-06-05 13:13:19,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:19,252 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1290 transitions. [2021-06-05 13:13:19,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:19,252 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:19,253 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:19,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-06-05 13:13:19,253 INFO L430 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:19,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:19,253 INFO L82 PathProgramCache]: Analyzing trace with hash 495599698, now seen corresponding path program 355 times [2021-06-05 13:13:19,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:19,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938647839] [2021-06-05 13:13:19,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:19,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:19,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938647839] [2021-06-05 13:13:19,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938647839] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:19,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:19,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:19,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203015613] [2021-06-05 13:13:19,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:19,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:19,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:19,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:19,313 INFO L87 Difference]: Start difference. First operand 528 states and 1290 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:19,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:19,476 INFO L93 Difference]: Finished difference Result 621 states and 1513 transitions. [2021-06-05 13:13:19,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:19,477 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:19,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:19,477 INFO L225 Difference]: With dead ends: 621 [2021-06-05 13:13:19,477 INFO L226 Difference]: Without dead ends: 536 [2021-06-05 13:13:19,478 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:19,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-06-05 13:13:19,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 516. [2021-06-05 13:13:19,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 2.4466019417475726) internal successors, (1260), 515 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1260 transitions. [2021-06-05 13:13:19,482 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1260 transitions. Word has length 26 [2021-06-05 13:13:19,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:19,483 INFO L482 AbstractCegarLoop]: Abstraction has 516 states and 1260 transitions. [2021-06-05 13:13:19,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:19,483 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1260 transitions. [2021-06-05 13:13:19,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:19,483 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:19,483 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:19,483 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-06-05 13:13:19,483 INFO L430 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:19,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:19,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1679429906, now seen corresponding path program 356 times [2021-06-05 13:13:19,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:19,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436334961] [2021-06-05 13:13:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:19,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:19,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436334961] [2021-06-05 13:13:19,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436334961] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:19,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:19,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:19,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353010524] [2021-06-05 13:13:19,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:19,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:19,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:19,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:19,544 INFO L87 Difference]: Start difference. First operand 516 states and 1260 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:19,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:19,711 INFO L93 Difference]: Finished difference Result 643 states and 1566 transitions. [2021-06-05 13:13:19,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:19,712 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:19,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:19,712 INFO L225 Difference]: With dead ends: 643 [2021-06-05 13:13:19,712 INFO L226 Difference]: Without dead ends: 541 [2021-06-05 13:13:19,712 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:19,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-06-05 13:13:19,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 501. [2021-06-05 13:13:19,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 2.462) internal successors, (1231), 500 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:19,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 1231 transitions. [2021-06-05 13:13:19,717 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 1231 transitions. Word has length 26 [2021-06-05 13:13:19,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:19,717 INFO L482 AbstractCegarLoop]: Abstraction has 501 states and 1231 transitions. [2021-06-05 13:13:19,717 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:19,717 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 1231 transitions. [2021-06-05 13:13:19,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:19,718 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:19,718 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:19,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-06-05 13:13:19,718 INFO L430 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:19,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:19,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1763388200, now seen corresponding path program 357 times [2021-06-05 13:13:19,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:19,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091502272] [2021-06-05 13:13:19,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:19,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:19,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:19,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091502272] [2021-06-05 13:13:19,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091502272] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:19,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:19,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:19,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347016602] [2021-06-05 13:13:19,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:19,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:19,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:19,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:19,781 INFO L87 Difference]: Start difference. First operand 501 states and 1231 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:19,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:19,948 INFO L93 Difference]: Finished difference Result 600 states and 1466 transitions. [2021-06-05 13:13:19,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:19,949 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:19,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:19,949 INFO L225 Difference]: With dead ends: 600 [2021-06-05 13:13:19,949 INFO L226 Difference]: Without dead ends: 459 [2021-06-05 13:13:19,949 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:19,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-06-05 13:13:19,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 419. [2021-06-05 13:13:19,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 2.4665071770334928) internal successors, (1031), 418 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:19,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1031 transitions. [2021-06-05 13:13:19,953 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1031 transitions. Word has length 26 [2021-06-05 13:13:19,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:19,953 INFO L482 AbstractCegarLoop]: Abstraction has 419 states and 1031 transitions. [2021-06-05 13:13:19,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:19,954 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1031 transitions. [2021-06-05 13:13:19,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:19,954 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:19,954 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:19,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-06-05 13:13:19,954 INFO L430 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:19,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:19,954 INFO L82 PathProgramCache]: Analyzing trace with hash 323941484, now seen corresponding path program 358 times [2021-06-05 13:13:19,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:19,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873979372] [2021-06-05 13:13:19,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:20,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:20,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:20,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873979372] [2021-06-05 13:13:20,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873979372] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:20,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:20,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:20,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870879538] [2021-06-05 13:13:20,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:20,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:20,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:20,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:20,014 INFO L87 Difference]: Start difference. First operand 419 states and 1031 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:20,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:20,179 INFO L93 Difference]: Finished difference Result 544 states and 1325 transitions. [2021-06-05 13:13:20,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:20,179 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:20,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:20,180 INFO L225 Difference]: With dead ends: 544 [2021-06-05 13:13:20,180 INFO L226 Difference]: Without dead ends: 423 [2021-06-05 13:13:20,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:20,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-06-05 13:13:20,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 419. [2021-06-05 13:13:20,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 2.4425837320574164) internal successors, (1021), 418 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:20,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1021 transitions. [2021-06-05 13:13:20,184 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1021 transitions. Word has length 26 [2021-06-05 13:13:20,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:20,184 INFO L482 AbstractCegarLoop]: Abstraction has 419 states and 1021 transitions. [2021-06-05 13:13:20,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:20,184 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1021 transitions. [2021-06-05 13:13:20,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:20,184 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:20,184 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:20,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-06-05 13:13:20,184 INFO L430 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:20,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:20,185 INFO L82 PathProgramCache]: Analyzing trace with hash 2082614990, now seen corresponding path program 359 times [2021-06-05 13:13:20,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:20,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259975319] [2021-06-05 13:13:20,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:20,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:20,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259975319] [2021-06-05 13:13:20,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259975319] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:20,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:20,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:20,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030998206] [2021-06-05 13:13:20,265 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:20,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:20,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:20,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:20,265 INFO L87 Difference]: Start difference. First operand 419 states and 1021 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:20,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:20,419 INFO L93 Difference]: Finished difference Result 545 states and 1321 transitions. [2021-06-05 13:13:20,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:20,419 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:20,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:20,420 INFO L225 Difference]: With dead ends: 545 [2021-06-05 13:13:20,420 INFO L226 Difference]: Without dead ends: 429 [2021-06-05 13:13:20,420 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:20,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-06-05 13:13:20,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 423. [2021-06-05 13:13:20,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 2.4360189573459716) internal successors, (1028), 422 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:20,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1028 transitions. [2021-06-05 13:13:20,424 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1028 transitions. Word has length 26 [2021-06-05 13:13:20,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:20,424 INFO L482 AbstractCegarLoop]: Abstraction has 423 states and 1028 transitions. [2021-06-05 13:13:20,424 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:20,424 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1028 transitions. [2021-06-05 13:13:20,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:20,424 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:20,424 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:20,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-06-05 13:13:20,425 INFO L430 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:20,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:20,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1483348368, now seen corresponding path program 360 times [2021-06-05 13:13:20,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:20,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105451306] [2021-06-05 13:13:20,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:20,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:20,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105451306] [2021-06-05 13:13:20,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105451306] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:20,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:20,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:20,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919305655] [2021-06-05 13:13:20,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:20,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:20,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:20,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:20,485 INFO L87 Difference]: Start difference. First operand 423 states and 1028 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:20,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:20,644 INFO L93 Difference]: Finished difference Result 536 states and 1302 transitions. [2021-06-05 13:13:20,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:20,645 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:20,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:20,645 INFO L225 Difference]: With dead ends: 536 [2021-06-05 13:13:20,645 INFO L226 Difference]: Without dead ends: 417 [2021-06-05 13:13:20,645 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:20,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-06-05 13:13:20,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 409. [2021-06-05 13:13:20,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 2.4534313725490198) internal successors, (1001), 408 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1001 transitions. [2021-06-05 13:13:20,649 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 1001 transitions. Word has length 26 [2021-06-05 13:13:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:20,649 INFO L482 AbstractCegarLoop]: Abstraction has 409 states and 1001 transitions. [2021-06-05 13:13:20,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:20,649 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1001 transitions. [2021-06-05 13:13:20,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:20,650 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:20,650 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:20,650 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-06-05 13:13:20,650 INFO L430 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:20,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:20,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1622263662, now seen corresponding path program 361 times [2021-06-05 13:13:20,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:20,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166100025] [2021-06-05 13:13:20,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:20,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:20,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166100025] [2021-06-05 13:13:20,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166100025] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:20,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:20,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:13:20,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497953843] [2021-06-05 13:13:20,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:13:20,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:20,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:13:20,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:20,717 INFO L87 Difference]: Start difference. First operand 409 states and 1001 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:20,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:20,846 INFO L93 Difference]: Finished difference Result 541 states and 1317 transitions. [2021-06-05 13:13:20,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:13:20,846 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:20,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:20,847 INFO L225 Difference]: With dead ends: 541 [2021-06-05 13:13:20,847 INFO L226 Difference]: Without dead ends: 430 [2021-06-05 13:13:20,847 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:20,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-06-05 13:13:20,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 426. [2021-06-05 13:13:20,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 2.428235294117647) internal successors, (1032), 425 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:20,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1032 transitions. [2021-06-05 13:13:20,851 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1032 transitions. Word has length 26 [2021-06-05 13:13:20,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:20,851 INFO L482 AbstractCegarLoop]: Abstraction has 426 states and 1032 transitions. [2021-06-05 13:13:20,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:20,851 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1032 transitions. [2021-06-05 13:13:20,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:20,851 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:20,852 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:20,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-06-05 13:13:20,852 INFO L430 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:20,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:20,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1764452498, now seen corresponding path program 362 times [2021-06-05 13:13:20,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:20,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043316341] [2021-06-05 13:13:20,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:20,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:20,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043316341] [2021-06-05 13:13:20,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043316341] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:20,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:20,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:13:20,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291791492] [2021-06-05 13:13:20,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:13:20,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:20,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:13:20,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:20,922 INFO L87 Difference]: Start difference. First operand 426 states and 1032 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:21,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:21,067 INFO L93 Difference]: Finished difference Result 544 states and 1316 transitions. [2021-06-05 13:13:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:13:21,067 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:21,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:21,068 INFO L225 Difference]: With dead ends: 544 [2021-06-05 13:13:21,068 INFO L226 Difference]: Without dead ends: 444 [2021-06-05 13:13:21,068 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:21,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-06-05 13:13:21,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 431. [2021-06-05 13:13:21,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 2.425581395348837) internal successors, (1043), 430 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:21,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1043 transitions. [2021-06-05 13:13:21,072 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1043 transitions. Word has length 26 [2021-06-05 13:13:21,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:21,072 INFO L482 AbstractCegarLoop]: Abstraction has 431 states and 1043 transitions. [2021-06-05 13:13:21,072 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:21,073 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1043 transitions. [2021-06-05 13:13:21,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:21,073 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:21,073 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:21,073 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-06-05 13:13:21,073 INFO L430 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:21,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:21,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1609938832, now seen corresponding path program 363 times [2021-06-05 13:13:21,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:21,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458082485] [2021-06-05 13:13:21,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:21,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:21,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:21,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458082485] [2021-06-05 13:13:21,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458082485] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:21,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:21,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:13:21,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953918908] [2021-06-05 13:13:21,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:13:21,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:21,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:13:21,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:21,124 INFO L87 Difference]: Start difference. First operand 431 states and 1043 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:21,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:21,248 INFO L93 Difference]: Finished difference Result 539 states and 1307 transitions. [2021-06-05 13:13:21,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:13:21,248 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:21,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:21,248 INFO L225 Difference]: With dead ends: 539 [2021-06-05 13:13:21,249 INFO L226 Difference]: Without dead ends: 431 [2021-06-05 13:13:21,249 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:21,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-06-05 13:13:21,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 414. [2021-06-05 13:13:21,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 2.4455205811138017) internal successors, (1010), 413 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:21,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1010 transitions. [2021-06-05 13:13:21,253 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1010 transitions. Word has length 26 [2021-06-05 13:13:21,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:21,253 INFO L482 AbstractCegarLoop]: Abstraction has 414 states and 1010 transitions. [2021-06-05 13:13:21,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:21,253 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1010 transitions. [2021-06-05 13:13:21,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:21,253 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:21,253 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:21,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-06-05 13:13:21,253 INFO L430 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:21,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:21,253 INFO L82 PathProgramCache]: Analyzing trace with hash 2058833742, now seen corresponding path program 364 times [2021-06-05 13:13:21,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:21,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196764596] [2021-06-05 13:13:21,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:21,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:21,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:21,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196764596] [2021-06-05 13:13:21,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196764596] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:21,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:21,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:21,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535083527] [2021-06-05 13:13:21,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:21,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:21,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:21,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:21,313 INFO L87 Difference]: Start difference. First operand 414 states and 1010 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:21,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:21,470 INFO L93 Difference]: Finished difference Result 552 states and 1354 transitions. [2021-06-05 13:13:21,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:21,471 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:21,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:21,471 INFO L225 Difference]: With dead ends: 552 [2021-06-05 13:13:21,471 INFO L226 Difference]: Without dead ends: 447 [2021-06-05 13:13:21,471 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:21,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-06-05 13:13:21,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 426. [2021-06-05 13:13:21,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 2.468235294117647) internal successors, (1049), 425 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:21,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1049 transitions. [2021-06-05 13:13:21,475 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1049 transitions. Word has length 26 [2021-06-05 13:13:21,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:21,475 INFO L482 AbstractCegarLoop]: Abstraction has 426 states and 1049 transitions. [2021-06-05 13:13:21,475 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:21,475 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1049 transitions. [2021-06-05 13:13:21,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:21,476 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:21,476 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:21,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-06-05 13:13:21,476 INFO L430 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:21,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:21,476 INFO L82 PathProgramCache]: Analyzing trace with hash -331419052, now seen corresponding path program 365 times [2021-06-05 13:13:21,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:21,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008740938] [2021-06-05 13:13:21,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:21,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:21,539 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:21,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008740938] [2021-06-05 13:13:21,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008740938] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:21,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:21,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:21,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303795735] [2021-06-05 13:13:21,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:21,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:21,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:21,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:21,540 INFO L87 Difference]: Start difference. First operand 426 states and 1049 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:21,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:21,695 INFO L93 Difference]: Finished difference Result 587 states and 1441 transitions. [2021-06-05 13:13:21,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:21,696 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:21,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:21,696 INFO L225 Difference]: With dead ends: 587 [2021-06-05 13:13:21,696 INFO L226 Difference]: Without dead ends: 454 [2021-06-05 13:13:21,696 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:21,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-06-05 13:13:21,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 438. [2021-06-05 13:13:21,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 2.462242562929062) internal successors, (1076), 437 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:21,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1076 transitions. [2021-06-05 13:13:21,701 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1076 transitions. Word has length 26 [2021-06-05 13:13:21,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:21,701 INFO L482 AbstractCegarLoop]: Abstraction has 438 states and 1076 transitions. [2021-06-05 13:13:21,701 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:21,701 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1076 transitions. [2021-06-05 13:13:21,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:21,701 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:21,701 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:21,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-06-05 13:13:21,701 INFO L430 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:21,701 INFO L82 PathProgramCache]: Analyzing trace with hash -2118876052, now seen corresponding path program 366 times [2021-06-05 13:13:21,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:21,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304873705] [2021-06-05 13:13:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:21,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:21,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:21,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304873705] [2021-06-05 13:13:21,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304873705] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:21,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:21,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:21,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933780410] [2021-06-05 13:13:21,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:21,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:21,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:21,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:21,761 INFO L87 Difference]: Start difference. First operand 438 states and 1076 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:21,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:21,926 INFO L93 Difference]: Finished difference Result 557 states and 1384 transitions. [2021-06-05 13:13:21,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:21,926 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:21,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:21,927 INFO L225 Difference]: With dead ends: 557 [2021-06-05 13:13:21,927 INFO L226 Difference]: Without dead ends: 460 [2021-06-05 13:13:21,927 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:21,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-06-05 13:13:21,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 443. [2021-06-05 13:13:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 2.4683257918552037) internal successors, (1091), 442 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:21,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1091 transitions. [2021-06-05 13:13:21,931 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1091 transitions. Word has length 26 [2021-06-05 13:13:21,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:21,931 INFO L482 AbstractCegarLoop]: Abstraction has 443 states and 1091 transitions. [2021-06-05 13:13:21,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:21,931 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1091 transitions. [2021-06-05 13:13:21,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:21,931 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:21,931 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:21,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-06-05 13:13:21,932 INFO L430 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:21,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:21,932 INFO L82 PathProgramCache]: Analyzing trace with hash 607162702, now seen corresponding path program 367 times [2021-06-05 13:13:21,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:21,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143975860] [2021-06-05 13:13:21,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:21,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:21,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:21,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143975860] [2021-06-05 13:13:21,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143975860] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:21,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:21,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:21,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17478538] [2021-06-05 13:13:21,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:21,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:21,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:21,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:21,998 INFO L87 Difference]: Start difference. First operand 443 states and 1091 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:22,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:22,153 INFO L93 Difference]: Finished difference Result 553 states and 1364 transitions. [2021-06-05 13:13:22,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:22,153 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:22,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:22,153 INFO L225 Difference]: With dead ends: 553 [2021-06-05 13:13:22,153 INFO L226 Difference]: Without dead ends: 448 [2021-06-05 13:13:22,154 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:22,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-06-05 13:13:22,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 426. [2021-06-05 13:13:22,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 2.4447058823529413) internal successors, (1039), 425 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:22,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1039 transitions. [2021-06-05 13:13:22,157 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1039 transitions. Word has length 26 [2021-06-05 13:13:22,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:22,158 INFO L482 AbstractCegarLoop]: Abstraction has 426 states and 1039 transitions. [2021-06-05 13:13:22,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:22,158 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1039 transitions. [2021-06-05 13:13:22,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:22,158 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:22,158 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:22,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-06-05 13:13:22,158 INFO L430 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:22,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:22,158 INFO L82 PathProgramCache]: Analyzing trace with hash 860847822, now seen corresponding path program 368 times [2021-06-05 13:13:22,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:22,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096391564] [2021-06-05 13:13:22,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:22,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:22,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096391564] [2021-06-05 13:13:22,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096391564] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:22,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:22,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:22,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003325321] [2021-06-05 13:13:22,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:22,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:22,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:22,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:22,238 INFO L87 Difference]: Start difference. First operand 426 states and 1039 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:22,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:22,391 INFO L93 Difference]: Finished difference Result 558 states and 1354 transitions. [2021-06-05 13:13:22,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:22,392 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:22,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:22,392 INFO L225 Difference]: With dead ends: 558 [2021-06-05 13:13:22,392 INFO L226 Difference]: Without dead ends: 451 [2021-06-05 13:13:22,392 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:22,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-06-05 13:13:22,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 436. [2021-06-05 13:13:22,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 2.439080459770115) internal successors, (1061), 435 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:22,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1061 transitions. [2021-06-05 13:13:22,396 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1061 transitions. Word has length 26 [2021-06-05 13:13:22,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:22,396 INFO L482 AbstractCegarLoop]: Abstraction has 436 states and 1061 transitions. [2021-06-05 13:13:22,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:22,397 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1061 transitions. [2021-06-05 13:13:22,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:22,397 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:22,397 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:22,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-06-05 13:13:22,397 INFO L430 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:22,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:22,397 INFO L82 PathProgramCache]: Analyzing trace with hash 261581200, now seen corresponding path program 369 times [2021-06-05 13:13:22,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:22,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917459421] [2021-06-05 13:13:22,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:22,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:22,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917459421] [2021-06-05 13:13:22,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917459421] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:22,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:22,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:22,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598894950] [2021-06-05 13:13:22,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:22,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:22,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:22,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:22,456 INFO L87 Difference]: Start difference. First operand 436 states and 1061 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:22,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:22,623 INFO L93 Difference]: Finished difference Result 542 states and 1322 transitions. [2021-06-05 13:13:22,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:22,624 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:22,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:22,624 INFO L225 Difference]: With dead ends: 542 [2021-06-05 13:13:22,624 INFO L226 Difference]: Without dead ends: 443 [2021-06-05 13:13:22,624 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:22,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-06-05 13:13:22,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2021-06-05 13:13:22,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 2.4393592677345537) internal successors, (1066), 437 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:22,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1066 transitions. [2021-06-05 13:13:22,628 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1066 transitions. Word has length 26 [2021-06-05 13:13:22,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:22,628 INFO L482 AbstractCegarLoop]: Abstraction has 438 states and 1066 transitions. [2021-06-05 13:13:22,629 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:22,629 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1066 transitions. [2021-06-05 13:13:22,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:22,629 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:22,629 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:22,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-06-05 13:13:22,629 INFO L430 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:22,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:22,629 INFO L82 PathProgramCache]: Analyzing trace with hash 654039856, now seen corresponding path program 370 times [2021-06-05 13:13:22,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:22,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110159047] [2021-06-05 13:13:22,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:22,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:22,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:22,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110159047] [2021-06-05 13:13:22,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110159047] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:22,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:22,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:22,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078710397] [2021-06-05 13:13:22,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:22,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:22,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:22,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:22,703 INFO L87 Difference]: Start difference. First operand 438 states and 1066 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:22,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:22,859 INFO L93 Difference]: Finished difference Result 571 states and 1384 transitions. [2021-06-05 13:13:22,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:22,859 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:22,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:22,860 INFO L225 Difference]: With dead ends: 571 [2021-06-05 13:13:22,860 INFO L226 Difference]: Without dead ends: 461 [2021-06-05 13:13:22,860 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:22,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-06-05 13:13:22,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 445. [2021-06-05 13:13:22,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.436936936936937) internal successors, (1082), 444 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1082 transitions. [2021-06-05 13:13:22,864 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1082 transitions. Word has length 26 [2021-06-05 13:13:22,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:22,864 INFO L482 AbstractCegarLoop]: Abstraction has 445 states and 1082 transitions. [2021-06-05 13:13:22,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1082 transitions. [2021-06-05 13:13:22,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:22,864 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:22,864 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:22,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-06-05 13:13:22,865 INFO L430 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:22,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:22,865 INFO L82 PathProgramCache]: Analyzing trace with hash -850798962, now seen corresponding path program 371 times [2021-06-05 13:13:22,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:22,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573242603] [2021-06-05 13:13:22,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:22,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:22,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573242603] [2021-06-05 13:13:22,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573242603] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:22,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:22,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:22,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639146710] [2021-06-05 13:13:22,925 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:22,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:22,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:22,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:22,925 INFO L87 Difference]: Start difference. First operand 445 states and 1082 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:23,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:23,081 INFO L93 Difference]: Finished difference Result 570 states and 1380 transitions. [2021-06-05 13:13:23,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:23,081 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:23,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:23,082 INFO L225 Difference]: With dead ends: 570 [2021-06-05 13:13:23,082 INFO L226 Difference]: Without dead ends: 468 [2021-06-05 13:13:23,082 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:23,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-06-05 13:13:23,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 452. [2021-06-05 13:13:23,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 2.432372505543237) internal successors, (1097), 451 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:23,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1097 transitions. [2021-06-05 13:13:23,086 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1097 transitions. Word has length 26 [2021-06-05 13:13:23,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:23,086 INFO L482 AbstractCegarLoop]: Abstraction has 452 states and 1097 transitions. [2021-06-05 13:13:23,086 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:23,086 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1097 transitions. [2021-06-05 13:13:23,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:23,087 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:23,087 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:23,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-06-05 13:13:23,087 INFO L430 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:23,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:23,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1773999346, now seen corresponding path program 372 times [2021-06-05 13:13:23,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:23,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833030085] [2021-06-05 13:13:23,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:23,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:23,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:23,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833030085] [2021-06-05 13:13:23,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833030085] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:23,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:23,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:23,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271530910] [2021-06-05 13:13:23,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:23,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:23,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:23,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:23,171 INFO L87 Difference]: Start difference. First operand 452 states and 1097 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:23,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:23,382 INFO L93 Difference]: Finished difference Result 564 states and 1379 transitions. [2021-06-05 13:13:23,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:23,383 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:23,383 INFO L225 Difference]: With dead ends: 564 [2021-06-05 13:13:23,383 INFO L226 Difference]: Without dead ends: 467 [2021-06-05 13:13:23,384 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:23,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-06-05 13:13:23,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 457. [2021-06-05 13:13:23,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 2.43859649122807) internal successors, (1112), 456 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:23,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1112 transitions. [2021-06-05 13:13:23,389 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 1112 transitions. Word has length 26 [2021-06-05 13:13:23,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:23,389 INFO L482 AbstractCegarLoop]: Abstraction has 457 states and 1112 transitions. [2021-06-05 13:13:23,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:23,389 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 1112 transitions. [2021-06-05 13:13:23,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:23,390 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:23,390 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:23,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-06-05 13:13:23,390 INFO L430 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:23,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:23,390 INFO L82 PathProgramCache]: Analyzing trace with hash 381854800, now seen corresponding path program 373 times [2021-06-05 13:13:23,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:23,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439883484] [2021-06-05 13:13:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:23,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:23,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439883484] [2021-06-05 13:13:23,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439883484] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:23,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:23,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:23,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780029986] [2021-06-05 13:13:23,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:23,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:23,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:23,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:23,450 INFO L87 Difference]: Start difference. First operand 457 states and 1112 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:23,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:23,605 INFO L93 Difference]: Finished difference Result 564 states and 1377 transitions. [2021-06-05 13:13:23,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:23,606 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:23,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:23,606 INFO L225 Difference]: With dead ends: 564 [2021-06-05 13:13:23,606 INFO L226 Difference]: Without dead ends: 460 [2021-06-05 13:13:23,606 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:23,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-06-05 13:13:23,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 445. [2021-06-05 13:13:23,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.434684684684685) internal successors, (1081), 444 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:23,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1081 transitions. [2021-06-05 13:13:23,611 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1081 transitions. Word has length 26 [2021-06-05 13:13:23,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:23,612 INFO L482 AbstractCegarLoop]: Abstraction has 445 states and 1081 transitions. [2021-06-05 13:13:23,612 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:23,612 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1081 transitions. [2021-06-05 13:13:23,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:23,613 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:23,613 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:23,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-06-05 13:13:23,613 INFO L430 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:23,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:23,614 INFO L82 PathProgramCache]: Analyzing trace with hash 558338404, now seen corresponding path program 374 times [2021-06-05 13:13:23,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:23,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533954425] [2021-06-05 13:13:23,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:23,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:23,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:23,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533954425] [2021-06-05 13:13:23,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533954425] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:23,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:23,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:23,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051128784] [2021-06-05 13:13:23,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:23,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:23,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:23,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:23,675 INFO L87 Difference]: Start difference. First operand 445 states and 1081 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:23,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:23,823 INFO L93 Difference]: Finished difference Result 598 states and 1453 transitions. [2021-06-05 13:13:23,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:23,823 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:23,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:23,824 INFO L225 Difference]: With dead ends: 598 [2021-06-05 13:13:23,824 INFO L226 Difference]: Without dead ends: 471 [2021-06-05 13:13:23,824 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:23,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-06-05 13:13:23,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 445. [2021-06-05 13:13:23,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.425675675675676) internal successors, (1077), 444 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:23,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1077 transitions. [2021-06-05 13:13:23,828 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1077 transitions. Word has length 26 [2021-06-05 13:13:23,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:23,828 INFO L482 AbstractCegarLoop]: Abstraction has 445 states and 1077 transitions. [2021-06-05 13:13:23,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:23,828 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1077 transitions. [2021-06-05 13:13:23,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:23,829 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:23,829 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:23,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-06-05 13:13:23,829 INFO L430 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:23,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:23,829 INFO L82 PathProgramCache]: Analyzing trace with hash 675595906, now seen corresponding path program 375 times [2021-06-05 13:13:23,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:23,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966680220] [2021-06-05 13:13:23,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:23,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:23,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:23,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966680220] [2021-06-05 13:13:23,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966680220] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:23,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:23,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:23,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535278168] [2021-06-05 13:13:23,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:23,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:23,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:23,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:23,888 INFO L87 Difference]: Start difference. First operand 445 states and 1077 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:24,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:24,043 INFO L93 Difference]: Finished difference Result 583 states and 1427 transitions. [2021-06-05 13:13:24,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:24,044 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:24,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:24,044 INFO L225 Difference]: With dead ends: 583 [2021-06-05 13:13:24,044 INFO L226 Difference]: Without dead ends: 464 [2021-06-05 13:13:24,044 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:24,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-06-05 13:13:24,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 450. [2021-06-05 13:13:24,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 2.4320712694877504) internal successors, (1092), 449 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:24,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1092 transitions. [2021-06-05 13:13:24,049 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1092 transitions. Word has length 26 [2021-06-05 13:13:24,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:24,049 INFO L482 AbstractCegarLoop]: Abstraction has 450 states and 1092 transitions. [2021-06-05 13:13:24,049 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:24,049 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1092 transitions. [2021-06-05 13:13:24,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:24,049 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:24,049 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:24,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-06-05 13:13:24,049 INFO L430 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:24,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:24,049 INFO L82 PathProgramCache]: Analyzing trace with hash -893332636, now seen corresponding path program 376 times [2021-06-05 13:13:24,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:24,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66428363] [2021-06-05 13:13:24,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:24,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:24,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66428363] [2021-06-05 13:13:24,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66428363] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:24,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:24,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:24,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013233063] [2021-06-05 13:13:24,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:24,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:24,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:24,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:24,109 INFO L87 Difference]: Start difference. First operand 450 states and 1092 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:24,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:24,259 INFO L93 Difference]: Finished difference Result 599 states and 1449 transitions. [2021-06-05 13:13:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:24,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:24,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:24,260 INFO L225 Difference]: With dead ends: 599 [2021-06-05 13:13:24,260 INFO L226 Difference]: Without dead ends: 472 [2021-06-05 13:13:24,260 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:24,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-06-05 13:13:24,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 450. [2021-06-05 13:13:24,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 2.387527839643653) internal successors, (1072), 449 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:24,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1072 transitions. [2021-06-05 13:13:24,264 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1072 transitions. Word has length 26 [2021-06-05 13:13:24,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:24,264 INFO L482 AbstractCegarLoop]: Abstraction has 450 states and 1072 transitions. [2021-06-05 13:13:24,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:24,264 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1072 transitions. [2021-06-05 13:13:24,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:24,265 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:24,265 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:24,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-06-05 13:13:24,265 INFO L430 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:24,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:24,265 INFO L82 PathProgramCache]: Analyzing trace with hash -700651216, now seen corresponding path program 377 times [2021-06-05 13:13:24,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:24,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824412731] [2021-06-05 13:13:24,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:24,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:24,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:24,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824412731] [2021-06-05 13:13:24,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824412731] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:24,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:24,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:24,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151371368] [2021-06-05 13:13:24,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:24,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:24,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:24,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:24,326 INFO L87 Difference]: Start difference. First operand 450 states and 1072 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:24,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:24,475 INFO L93 Difference]: Finished difference Result 553 states and 1321 transitions. [2021-06-05 13:13:24,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:24,475 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:24,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:24,476 INFO L225 Difference]: With dead ends: 553 [2021-06-05 13:13:24,476 INFO L226 Difference]: Without dead ends: 420 [2021-06-05 13:13:24,476 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:24,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-06-05 13:13:24,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 403. [2021-06-05 13:13:24,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 2.388059701492537) internal successors, (960), 402 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:24,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 960 transitions. [2021-06-05 13:13:24,483 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 960 transitions. Word has length 26 [2021-06-05 13:13:24,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:24,483 INFO L482 AbstractCegarLoop]: Abstraction has 403 states and 960 transitions. [2021-06-05 13:13:24,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:24,483 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 960 transitions. [2021-06-05 13:13:24,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:24,484 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:24,484 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:24,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-06-05 13:13:24,484 INFO L430 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:24,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:24,484 INFO L82 PathProgramCache]: Analyzing trace with hash 25600402, now seen corresponding path program 378 times [2021-06-05 13:13:24,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:24,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172705998] [2021-06-05 13:13:24,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:24,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:24,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:24,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172705998] [2021-06-05 13:13:24,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172705998] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:24,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:24,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:13:24,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086992576] [2021-06-05 13:13:24,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:13:24,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:24,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:13:24,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:24,551 INFO L87 Difference]: Start difference. First operand 403 states and 960 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:24,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:24,680 INFO L93 Difference]: Finished difference Result 542 states and 1283 transitions. [2021-06-05 13:13:24,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:13:24,680 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:24,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:24,681 INFO L225 Difference]: With dead ends: 542 [2021-06-05 13:13:24,681 INFO L226 Difference]: Without dead ends: 426 [2021-06-05 13:13:24,681 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:24,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-06-05 13:13:24,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 413. [2021-06-05 13:13:24,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 2.3640776699029127) internal successors, (974), 412 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:24,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 974 transitions. [2021-06-05 13:13:24,685 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 974 transitions. Word has length 26 [2021-06-05 13:13:24,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:24,685 INFO L482 AbstractCegarLoop]: Abstraction has 413 states and 974 transitions. [2021-06-05 13:13:24,685 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:24,685 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 974 transitions. [2021-06-05 13:13:24,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:24,685 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:24,685 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:24,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2021-06-05 13:13:24,685 INFO L430 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:24,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:24,686 INFO L82 PathProgramCache]: Analyzing trace with hash -573666220, now seen corresponding path program 379 times [2021-06-05 13:13:24,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:24,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577108032] [2021-06-05 13:13:24,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:24,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:24,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577108032] [2021-06-05 13:13:24,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577108032] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:24,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:24,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:24,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887494893] [2021-06-05 13:13:24,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:24,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:24,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:24,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:24,756 INFO L87 Difference]: Start difference. First operand 413 states and 974 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:24,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:24,913 INFO L93 Difference]: Finished difference Result 537 states and 1263 transitions. [2021-06-05 13:13:24,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:24,913 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:24,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:24,914 INFO L225 Difference]: With dead ends: 537 [2021-06-05 13:13:24,914 INFO L226 Difference]: Without dead ends: 418 [2021-06-05 13:13:24,914 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:24,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-06-05 13:13:24,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 403. [2021-06-05 13:13:24,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 2.3681592039800994) internal successors, (952), 402 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:24,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 952 transitions. [2021-06-05 13:13:24,917 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 952 transitions. Word has length 26 [2021-06-05 13:13:24,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:24,918 INFO L482 AbstractCegarLoop]: Abstraction has 403 states and 952 transitions. [2021-06-05 13:13:24,918 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:24,918 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 952 transitions. [2021-06-05 13:13:24,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:24,918 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:24,918 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:24,918 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2021-06-05 13:13:24,918 INFO L430 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:24,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:24,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1455837904, now seen corresponding path program 380 times [2021-06-05 13:13:24,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:24,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354427037] [2021-06-05 13:13:24,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:24,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:24,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354427037] [2021-06-05 13:13:24,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354427037] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:24,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:24,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:24,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991471502] [2021-06-05 13:13:24,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:24,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:24,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:24,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:24,987 INFO L87 Difference]: Start difference. First operand 403 states and 952 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:25,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:25,144 INFO L93 Difference]: Finished difference Result 526 states and 1249 transitions. [2021-06-05 13:13:25,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:25,145 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:25,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:25,145 INFO L225 Difference]: With dead ends: 526 [2021-06-05 13:13:25,145 INFO L226 Difference]: Without dead ends: 416 [2021-06-05 13:13:25,145 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:25,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-06-05 13:13:25,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 401. [2021-06-05 13:13:25,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 2.365) internal successors, (946), 400 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:25,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 946 transitions. [2021-06-05 13:13:25,149 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 946 transitions. Word has length 26 [2021-06-05 13:13:25,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:25,149 INFO L482 AbstractCegarLoop]: Abstraction has 401 states and 946 transitions. [2021-06-05 13:13:25,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:25,149 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 946 transitions. [2021-06-05 13:13:25,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:25,150 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:25,150 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:25,150 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2021-06-05 13:13:25,150 INFO L430 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:25,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:25,150 INFO L82 PathProgramCache]: Analyzing trace with hash -2055104526, now seen corresponding path program 381 times [2021-06-05 13:13:25,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:25,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162307539] [2021-06-05 13:13:25,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:25,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:25,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162307539] [2021-06-05 13:13:25,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162307539] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:25,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:25,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:25,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671201380] [2021-06-05 13:13:25,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:25,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:25,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:25,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:25,211 INFO L87 Difference]: Start difference. First operand 401 states and 946 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:25,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:25,368 INFO L93 Difference]: Finished difference Result 506 states and 1204 transitions. [2021-06-05 13:13:25,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:25,368 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:25,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:25,369 INFO L225 Difference]: With dead ends: 506 [2021-06-05 13:13:25,369 INFO L226 Difference]: Without dead ends: 407 [2021-06-05 13:13:25,369 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:25,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-06-05 13:13:25,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 401. [2021-06-05 13:13:25,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 2.3625) internal successors, (945), 400 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:25,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 945 transitions. [2021-06-05 13:13:25,372 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 945 transitions. Word has length 26 [2021-06-05 13:13:25,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:25,373 INFO L482 AbstractCegarLoop]: Abstraction has 401 states and 945 transitions. [2021-06-05 13:13:25,373 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:25,373 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 945 transitions. [2021-06-05 13:13:25,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:25,373 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:25,373 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:25,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2021-06-05 13:13:25,373 INFO L430 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:25,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:25,376 INFO L82 PathProgramCache]: Analyzing trace with hash -542686380, now seen corresponding path program 382 times [2021-06-05 13:13:25,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:25,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174622424] [2021-06-05 13:13:25,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:25,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:25,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:25,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174622424] [2021-06-05 13:13:25,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174622424] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:25,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:25,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:25,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847373918] [2021-06-05 13:13:25,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:25,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:25,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:25,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:25,436 INFO L87 Difference]: Start difference. First operand 401 states and 945 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:25,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:25,599 INFO L93 Difference]: Finished difference Result 513 states and 1227 transitions. [2021-06-05 13:13:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:25,600 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:25,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:25,600 INFO L225 Difference]: With dead ends: 513 [2021-06-05 13:13:25,600 INFO L226 Difference]: Without dead ends: 416 [2021-06-05 13:13:25,601 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:25,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-06-05 13:13:25,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 406. [2021-06-05 13:13:25,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 2.3703703703703702) internal successors, (960), 405 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:25,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 960 transitions. [2021-06-05 13:13:25,606 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 960 transitions. Word has length 26 [2021-06-05 13:13:25,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:25,606 INFO L482 AbstractCegarLoop]: Abstraction has 406 states and 960 transitions. [2021-06-05 13:13:25,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:25,606 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 960 transitions. [2021-06-05 13:13:25,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:25,606 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:25,606 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:25,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2021-06-05 13:13:25,607 INFO L430 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:25,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:25,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1934830926, now seen corresponding path program 383 times [2021-06-05 13:13:25,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:25,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939328378] [2021-06-05 13:13:25,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:25,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:25,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:25,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939328378] [2021-06-05 13:13:25,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939328378] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:25,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:25,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:25,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888426112] [2021-06-05 13:13:25,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:25,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:25,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:25,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:25,668 INFO L87 Difference]: Start difference. First operand 406 states and 960 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:25,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:25,822 INFO L93 Difference]: Finished difference Result 532 states and 1254 transitions. [2021-06-05 13:13:25,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:25,822 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:25,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:25,823 INFO L225 Difference]: With dead ends: 532 [2021-06-05 13:13:25,823 INFO L226 Difference]: Without dead ends: 430 [2021-06-05 13:13:25,823 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:25,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-06-05 13:13:25,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 416. [2021-06-05 13:13:25,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 2.346987951807229) internal successors, (974), 415 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:25,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 974 transitions. [2021-06-05 13:13:25,827 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 974 transitions. Word has length 26 [2021-06-05 13:13:25,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:25,827 INFO L482 AbstractCegarLoop]: Abstraction has 416 states and 974 transitions. [2021-06-05 13:13:25,827 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:25,827 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 974 transitions. [2021-06-05 13:13:25,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:25,827 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:25,827 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:25,827 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2021-06-05 13:13:25,827 INFO L430 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:25,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:25,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1603464470, now seen corresponding path program 384 times [2021-06-05 13:13:25,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:25,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547569970] [2021-06-05 13:13:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:25,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:25,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547569970] [2021-06-05 13:13:25,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547569970] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:25,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:25,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:25,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071535475] [2021-06-05 13:13:25,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:25,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:25,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:25,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:25,887 INFO L87 Difference]: Start difference. First operand 416 states and 974 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:26,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:26,038 INFO L93 Difference]: Finished difference Result 513 states and 1207 transitions. [2021-06-05 13:13:26,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:26,038 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:26,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:26,038 INFO L225 Difference]: With dead ends: 513 [2021-06-05 13:13:26,038 INFO L226 Difference]: Without dead ends: 404 [2021-06-05 13:13:26,039 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:26,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-06-05 13:13:26,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 381. [2021-06-05 13:13:26,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 2.363157894736842) internal successors, (898), 380 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:26,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 898 transitions. [2021-06-05 13:13:26,042 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 898 transitions. Word has length 26 [2021-06-05 13:13:26,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:26,042 INFO L482 AbstractCegarLoop]: Abstraction has 381 states and 898 transitions. [2021-06-05 13:13:26,042 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:26,042 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 898 transitions. [2021-06-05 13:13:26,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:26,043 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:26,043 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:26,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2021-06-05 13:13:26,043 INFO L430 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:26,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:26,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1538144538, now seen corresponding path program 385 times [2021-06-05 13:13:26,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:26,043 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855261463] [2021-06-05 13:13:26,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:26,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:26,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855261463] [2021-06-05 13:13:26,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855261463] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:26,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:26,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:26,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882128074] [2021-06-05 13:13:26,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:26,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:26,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:26,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:26,103 INFO L87 Difference]: Start difference. First operand 381 states and 898 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:26,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:26,251 INFO L93 Difference]: Finished difference Result 499 states and 1177 transitions. [2021-06-05 13:13:26,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:26,251 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:26,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:26,252 INFO L225 Difference]: With dead ends: 499 [2021-06-05 13:13:26,252 INFO L226 Difference]: Without dead ends: 381 [2021-06-05 13:13:26,252 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:26,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-06-05 13:13:26,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2021-06-05 13:13:26,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 2.331578947368421) internal successors, (886), 380 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:26,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 886 transitions. [2021-06-05 13:13:26,255 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 886 transitions. Word has length 26 [2021-06-05 13:13:26,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:26,256 INFO L482 AbstractCegarLoop]: Abstraction has 381 states and 886 transitions. [2021-06-05 13:13:26,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:26,256 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 886 transitions. [2021-06-05 13:13:26,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:26,256 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:26,256 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:26,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2021-06-05 13:13:26,256 INFO L430 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:26,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:26,256 INFO L82 PathProgramCache]: Analyzing trace with hash 629893402, now seen corresponding path program 386 times [2021-06-05 13:13:26,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:26,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215099324] [2021-06-05 13:13:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:26,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:26,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:26,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215099324] [2021-06-05 13:13:26,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215099324] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:26,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:26,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:26,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321035562] [2021-06-05 13:13:26,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:26,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:26,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:26,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:26,321 INFO L87 Difference]: Start difference. First operand 381 states and 886 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:26,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:26,462 INFO L93 Difference]: Finished difference Result 491 states and 1149 transitions. [2021-06-05 13:13:26,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:26,462 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:26,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:26,463 INFO L225 Difference]: With dead ends: 491 [2021-06-05 13:13:26,463 INFO L226 Difference]: Without dead ends: 384 [2021-06-05 13:13:26,463 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:26,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-06-05 13:13:26,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 381. [2021-06-05 13:13:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 2.3263157894736843) internal successors, (884), 380 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 884 transitions. [2021-06-05 13:13:26,467 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 884 transitions. Word has length 26 [2021-06-05 13:13:26,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:26,467 INFO L482 AbstractCegarLoop]: Abstraction has 381 states and 884 transitions. [2021-06-05 13:13:26,467 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:26,467 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 884 transitions. [2021-06-05 13:13:26,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:26,467 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:26,467 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:26,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2021-06-05 13:13:26,467 INFO L430 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:26,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:26,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1550469368, now seen corresponding path program 387 times [2021-06-05 13:13:26,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:26,468 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088137077] [2021-06-05 13:13:26,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:26,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:26,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088137077] [2021-06-05 13:13:26,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088137077] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:26,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:26,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:26,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618620100] [2021-06-05 13:13:26,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:26,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:26,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:26,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:26,533 INFO L87 Difference]: Start difference. First operand 381 states and 884 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:26,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:26,680 INFO L93 Difference]: Finished difference Result 484 states and 1132 transitions. [2021-06-05 13:13:26,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:26,680 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:26,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:26,681 INFO L225 Difference]: With dead ends: 484 [2021-06-05 13:13:26,681 INFO L226 Difference]: Without dead ends: 369 [2021-06-05 13:13:26,681 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:26,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-06-05 13:13:26,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2021-06-05 13:13:26,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 2.3369565217391304) internal successors, (860), 368 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 860 transitions. [2021-06-05 13:13:26,684 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 860 transitions. Word has length 26 [2021-06-05 13:13:26,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:26,684 INFO L482 AbstractCegarLoop]: Abstraction has 369 states and 860 transitions. [2021-06-05 13:13:26,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:26,684 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 860 transitions. [2021-06-05 13:13:26,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:26,685 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:26,685 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:26,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2021-06-05 13:13:26,685 INFO L430 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:26,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:26,685 INFO L82 PathProgramCache]: Analyzing trace with hash 924274646, now seen corresponding path program 388 times [2021-06-05 13:13:26,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:26,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083395462] [2021-06-05 13:13:26,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:26,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:26,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083395462] [2021-06-05 13:13:26,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083395462] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:26,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:26,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:26,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103487789] [2021-06-05 13:13:26,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:26,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:26,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:26,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:26,744 INFO L87 Difference]: Start difference. First operand 369 states and 860 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:26,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:26,893 INFO L93 Difference]: Finished difference Result 497 states and 1163 transitions. [2021-06-05 13:13:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:26,893 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:26,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:26,894 INFO L225 Difference]: With dead ends: 497 [2021-06-05 13:13:26,894 INFO L226 Difference]: Without dead ends: 349 [2021-06-05 13:13:26,894 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:26,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-06-05 13:13:26,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 345. [2021-06-05 13:13:26,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 2.3197674418604652) internal successors, (798), 344 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:26,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 798 transitions. [2021-06-05 13:13:26,897 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 798 transitions. Word has length 26 [2021-06-05 13:13:26,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:26,897 INFO L482 AbstractCegarLoop]: Abstraction has 345 states and 798 transitions. [2021-06-05 13:13:26,897 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:26,897 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 798 transitions. [2021-06-05 13:13:26,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:26,898 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:26,898 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:26,898 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2021-06-05 13:13:26,898 INFO L430 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:26,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:26,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1465978148, now seen corresponding path program 389 times [2021-06-05 13:13:26,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:26,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910729512] [2021-06-05 13:13:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:26,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:26,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910729512] [2021-06-05 13:13:26,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910729512] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:26,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:26,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:26,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281111205] [2021-06-05 13:13:26,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:26,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:26,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:26,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:26,957 INFO L87 Difference]: Start difference. First operand 345 states and 798 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:27,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:27,102 INFO L93 Difference]: Finished difference Result 469 states and 1098 transitions. [2021-06-05 13:13:27,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:27,103 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:27,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:27,103 INFO L225 Difference]: With dead ends: 469 [2021-06-05 13:13:27,103 INFO L226 Difference]: Without dead ends: 357 [2021-06-05 13:13:27,103 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:27,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-06-05 13:13:27,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2021-06-05 13:13:27,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 2.308988764044944) internal successors, (822), 356 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:27,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 822 transitions. [2021-06-05 13:13:27,106 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 822 transitions. Word has length 26 [2021-06-05 13:13:27,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:27,106 INFO L482 AbstractCegarLoop]: Abstraction has 357 states and 822 transitions. [2021-06-05 13:13:27,106 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:27,106 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 822 transitions. [2021-06-05 13:13:27,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:27,107 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:27,107 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:27,107 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2021-06-05 13:13:27,107 INFO L430 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:27,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:27,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1041532148, now seen corresponding path program 390 times [2021-06-05 13:13:27,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:27,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794290576] [2021-06-05 13:13:27,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:27,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:27,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:27,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794290576] [2021-06-05 13:13:27,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794290576] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:27,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:27,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:27,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569656713] [2021-06-05 13:13:27,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:27,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:27,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:27,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:27,167 INFO L87 Difference]: Start difference. First operand 357 states and 822 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:27,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:27,319 INFO L93 Difference]: Finished difference Result 474 states and 1113 transitions. [2021-06-05 13:13:27,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:27,320 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:27,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:27,320 INFO L225 Difference]: With dead ends: 474 [2021-06-05 13:13:27,320 INFO L226 Difference]: Without dead ends: 376 [2021-06-05 13:13:27,320 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:27,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-06-05 13:13:27,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 362. [2021-06-05 13:13:27,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 2.3185595567867034) internal successors, (837), 361 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:27,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 837 transitions. [2021-06-05 13:13:27,324 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 837 transitions. Word has length 26 [2021-06-05 13:13:27,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:27,324 INFO L482 AbstractCegarLoop]: Abstraction has 362 states and 837 transitions. [2021-06-05 13:13:27,324 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:27,324 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 837 transitions. [2021-06-05 13:13:27,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:27,324 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:27,324 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:27,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2021-06-05 13:13:27,324 INFO L430 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:27,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:27,324 INFO L82 PathProgramCache]: Analyzing trace with hash -527396394, now seen corresponding path program 391 times [2021-06-05 13:13:27,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:27,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142529773] [2021-06-05 13:13:27,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:27,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:27,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:27,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142529773] [2021-06-05 13:13:27,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142529773] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:27,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:27,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:27,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930404332] [2021-06-05 13:13:27,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:27,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:27,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:27,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:27,384 INFO L87 Difference]: Start difference. First operand 362 states and 837 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:27,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:27,525 INFO L93 Difference]: Finished difference Result 470 states and 1093 transitions. [2021-06-05 13:13:27,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:27,526 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:27,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:27,526 INFO L225 Difference]: With dead ends: 470 [2021-06-05 13:13:27,526 INFO L226 Difference]: Without dead ends: 364 [2021-06-05 13:13:27,526 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:27,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-06-05 13:13:27,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 345. [2021-06-05 13:13:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 2.3052325581395348) internal successors, (793), 344 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:27,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 793 transitions. [2021-06-05 13:13:27,529 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 793 transitions. Word has length 26 [2021-06-05 13:13:27,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:27,529 INFO L482 AbstractCegarLoop]: Abstraction has 345 states and 793 transitions. [2021-06-05 13:13:27,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:27,529 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 793 transitions. [2021-06-05 13:13:27,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:27,530 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:27,530 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:27,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2021-06-05 13:13:27,530 INFO L430 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:27,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:27,530 INFO L82 PathProgramCache]: Analyzing trace with hash -273711274, now seen corresponding path program 392 times [2021-06-05 13:13:27,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:27,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567768119] [2021-06-05 13:13:27,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:27,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:27,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:27,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567768119] [2021-06-05 13:13:27,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567768119] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:27,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:27,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:27,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096696340] [2021-06-05 13:13:27,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:27,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:27,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:27,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:27,589 INFO L87 Difference]: Start difference. First operand 345 states and 793 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:27,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:27,730 INFO L93 Difference]: Finished difference Result 452 states and 1049 transitions. [2021-06-05 13:13:27,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:27,730 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:27,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:27,731 INFO L225 Difference]: With dead ends: 452 [2021-06-05 13:13:27,731 INFO L226 Difference]: Without dead ends: 346 [2021-06-05 13:13:27,731 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:27,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-06-05 13:13:27,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 341. [2021-06-05 13:13:27,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 2.3058823529411763) internal successors, (784), 340 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:27,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 784 transitions. [2021-06-05 13:13:27,734 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 784 transitions. Word has length 26 [2021-06-05 13:13:27,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:27,734 INFO L482 AbstractCegarLoop]: Abstraction has 341 states and 784 transitions. [2021-06-05 13:13:27,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:27,734 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 784 transitions. [2021-06-05 13:13:27,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:27,734 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:27,734 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:27,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2021-06-05 13:13:27,734 INFO L430 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:27,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:27,735 INFO L82 PathProgramCache]: Analyzing trace with hash -872977896, now seen corresponding path program 393 times [2021-06-05 13:13:27,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:27,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832699434] [2021-06-05 13:13:27,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:27,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:27,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832699434] [2021-06-05 13:13:27,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832699434] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:27,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:27,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:27,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205350675] [2021-06-05 13:13:27,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:27,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:27,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:27,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:27,805 INFO L87 Difference]: Start difference. First operand 341 states and 784 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:27,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:27,950 INFO L93 Difference]: Finished difference Result 448 states and 1039 transitions. [2021-06-05 13:13:27,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:27,950 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:27,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:27,950 INFO L225 Difference]: With dead ends: 448 [2021-06-05 13:13:27,950 INFO L226 Difference]: Without dead ends: 348 [2021-06-05 13:13:27,951 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:27,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-06-05 13:13:27,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2021-06-05 13:13:27,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 2.2973760932944605) internal successors, (788), 343 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 788 transitions. [2021-06-05 13:13:27,954 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 788 transitions. Word has length 26 [2021-06-05 13:13:27,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:27,954 INFO L482 AbstractCegarLoop]: Abstraction has 344 states and 788 transitions. [2021-06-05 13:13:27,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:27,954 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 788 transitions. [2021-06-05 13:13:27,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:27,954 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:27,954 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:27,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2021-06-05 13:13:27,954 INFO L430 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:27,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:27,954 INFO L82 PathProgramCache]: Analyzing trace with hash -480519240, now seen corresponding path program 394 times [2021-06-05 13:13:27,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:27,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137368466] [2021-06-05 13:13:27,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:28,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:28,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137368466] [2021-06-05 13:13:28,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137368466] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:28,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:28,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:28,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958853148] [2021-06-05 13:13:28,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:28,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:28,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:28,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:28,014 INFO L87 Difference]: Start difference. First operand 344 states and 788 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:28,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:28,156 INFO L93 Difference]: Finished difference Result 453 states and 1051 transitions. [2021-06-05 13:13:28,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:28,157 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:28,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:28,157 INFO L225 Difference]: With dead ends: 453 [2021-06-05 13:13:28,157 INFO L226 Difference]: Without dead ends: 352 [2021-06-05 13:13:28,157 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:28,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-06-05 13:13:28,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 345. [2021-06-05 13:13:28,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 2.2936046511627906) internal successors, (789), 344 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:28,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 789 transitions. [2021-06-05 13:13:28,160 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 789 transitions. Word has length 26 [2021-06-05 13:13:28,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:28,160 INFO L482 AbstractCegarLoop]: Abstraction has 345 states and 789 transitions. [2021-06-05 13:13:28,160 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:28,160 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 789 transitions. [2021-06-05 13:13:28,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:28,161 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:28,161 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:28,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2021-06-05 13:13:28,161 INFO L430 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:28,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:28,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1985358058, now seen corresponding path program 395 times [2021-06-05 13:13:28,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:28,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572434150] [2021-06-05 13:13:28,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:28,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:28,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:28,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572434150] [2021-06-05 13:13:28,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572434150] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:28,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:28,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:28,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869526045] [2021-06-05 13:13:28,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:28,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:28,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:28,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:28,221 INFO L87 Difference]: Start difference. First operand 345 states and 789 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:28,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:28,365 INFO L93 Difference]: Finished difference Result 452 states and 1045 transitions. [2021-06-05 13:13:28,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:28,365 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:28,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:28,366 INFO L225 Difference]: With dead ends: 452 [2021-06-05 13:13:28,366 INFO L226 Difference]: Without dead ends: 349 [2021-06-05 13:13:28,366 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:28,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-06-05 13:13:28,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 346. [2021-06-05 13:13:28,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 2.289855072463768) internal successors, (790), 345 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:28,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 790 transitions. [2021-06-05 13:13:28,369 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 790 transitions. Word has length 26 [2021-06-05 13:13:28,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:28,369 INFO L482 AbstractCegarLoop]: Abstraction has 346 states and 790 transitions. [2021-06-05 13:13:28,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:28,369 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 790 transitions. [2021-06-05 13:13:28,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:28,370 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:28,370 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:28,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2021-06-05 13:13:28,370 INFO L430 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:28,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:28,370 INFO L82 PathProgramCache]: Analyzing trace with hash 639440250, now seen corresponding path program 396 times [2021-06-05 13:13:28,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:28,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861211670] [2021-06-05 13:13:28,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:28,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:28,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:28,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861211670] [2021-06-05 13:13:28,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861211670] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:28,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:28,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:28,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859723122] [2021-06-05 13:13:28,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:28,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:28,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:28,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:28,433 INFO L87 Difference]: Start difference. First operand 346 states and 790 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:28,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:28,584 INFO L93 Difference]: Finished difference Result 456 states and 1063 transitions. [2021-06-05 13:13:28,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:28,584 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:28,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:28,585 INFO L225 Difference]: With dead ends: 456 [2021-06-05 13:13:28,585 INFO L226 Difference]: Without dead ends: 358 [2021-06-05 13:13:28,585 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:28,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-06-05 13:13:28,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 351. [2021-06-05 13:13:28,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 2.3) internal successors, (805), 350 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:28,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 805 transitions. [2021-06-05 13:13:28,588 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 805 transitions. Word has length 26 [2021-06-05 13:13:28,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:28,588 INFO L482 AbstractCegarLoop]: Abstraction has 351 states and 805 transitions. [2021-06-05 13:13:28,588 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:28,588 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 805 transitions. [2021-06-05 13:13:28,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:28,589 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:28,589 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:28,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2021-06-05 13:13:28,589 INFO L430 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:28,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:28,589 INFO L82 PathProgramCache]: Analyzing trace with hash -752704296, now seen corresponding path program 397 times [2021-06-05 13:13:28,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:28,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74684463] [2021-06-05 13:13:28,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:28,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:28,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:28,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74684463] [2021-06-05 13:13:28,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74684463] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:28,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:28,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:28,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601860340] [2021-06-05 13:13:28,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:28,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:28,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:28,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:28,662 INFO L87 Difference]: Start difference. First operand 351 states and 805 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:28,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:28,806 INFO L93 Difference]: Finished difference Result 456 states and 1056 transitions. [2021-06-05 13:13:28,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:28,806 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:28,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:28,806 INFO L225 Difference]: With dead ends: 456 [2021-06-05 13:13:28,807 INFO L226 Difference]: Without dead ends: 351 [2021-06-05 13:13:28,807 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:28,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-06-05 13:13:28,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 339. [2021-06-05 13:13:28,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 2.298816568047337) internal successors, (777), 338 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:28,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 777 transitions. [2021-06-05 13:13:28,810 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 777 transitions. Word has length 26 [2021-06-05 13:13:28,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:28,810 INFO L482 AbstractCegarLoop]: Abstraction has 339 states and 777 transitions. [2021-06-05 13:13:28,810 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:28,810 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 777 transitions. [2021-06-05 13:13:28,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:28,810 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:28,810 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:28,810 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2021-06-05 13:13:28,810 INFO L430 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:28,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:28,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1846084458, now seen corresponding path program 398 times [2021-06-05 13:13:28,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:28,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204421979] [2021-06-05 13:13:28,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:28,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:28,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:28,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204421979] [2021-06-05 13:13:28,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204421979] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:28,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:28,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:28,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283108460] [2021-06-05 13:13:28,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:28,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:28,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:28,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:28,883 INFO L87 Difference]: Start difference. First operand 339 states and 777 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:29,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:29,031 INFO L93 Difference]: Finished difference Result 462 states and 1071 transitions. [2021-06-05 13:13:29,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:29,031 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:29,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:29,031 INFO L225 Difference]: With dead ends: 462 [2021-06-05 13:13:29,031 INFO L226 Difference]: Without dead ends: 311 [2021-06-05 13:13:29,031 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:29,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-06-05 13:13:29,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2021-06-05 13:13:29,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 2.274193548387097) internal successors, (705), 310 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:29,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 705 transitions. [2021-06-05 13:13:29,034 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 705 transitions. Word has length 26 [2021-06-05 13:13:29,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:29,034 INFO L482 AbstractCegarLoop]: Abstraction has 311 states and 705 transitions. [2021-06-05 13:13:29,034 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:29,035 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 705 transitions. [2021-06-05 13:13:29,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:29,035 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:29,035 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:29,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2021-06-05 13:13:29,035 INFO L430 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:29,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:29,035 INFO L82 PathProgramCache]: Analyzing trace with hash 58627458, now seen corresponding path program 399 times [2021-06-05 13:13:29,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:29,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557787570] [2021-06-05 13:13:29,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:29,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:29,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557787570] [2021-06-05 13:13:29,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557787570] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:29,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:29,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:29,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953051340] [2021-06-05 13:13:29,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:29,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:29,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:29,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:29,118 INFO L87 Difference]: Start difference. First operand 311 states and 705 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:29,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:29,260 INFO L93 Difference]: Finished difference Result 447 states and 1032 transitions. [2021-06-05 13:13:29,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:29,261 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:29,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:29,261 INFO L225 Difference]: With dead ends: 447 [2021-06-05 13:13:29,261 INFO L226 Difference]: Without dead ends: 326 [2021-06-05 13:13:29,261 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:29,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-06-05 13:13:29,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-06-05 13:13:29,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 2.252307692307692) internal successors, (732), 325 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:29,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 732 transitions. [2021-06-05 13:13:29,264 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 732 transitions. Word has length 26 [2021-06-05 13:13:29,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:29,264 INFO L482 AbstractCegarLoop]: Abstraction has 326 states and 732 transitions. [2021-06-05 13:13:29,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:29,264 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 732 transitions. [2021-06-05 13:13:29,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:29,265 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:29,265 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:29,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2021-06-05 13:13:29,265 INFO L430 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:29,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:29,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1510301084, now seen corresponding path program 400 times [2021-06-05 13:13:29,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:29,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917760408] [2021-06-05 13:13:29,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:29,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:29,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917760408] [2021-06-05 13:13:29,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917760408] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:29,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:29,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:29,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881841214] [2021-06-05 13:13:29,324 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:29,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:29,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:29,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:29,324 INFO L87 Difference]: Start difference. First operand 326 states and 732 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:29,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:29,455 INFO L93 Difference]: Finished difference Result 451 states and 1024 transitions. [2021-06-05 13:13:29,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:29,455 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:29,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:29,455 INFO L225 Difference]: With dead ends: 451 [2021-06-05 13:13:29,455 INFO L226 Difference]: Without dead ends: 322 [2021-06-05 13:13:29,455 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:29,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-06-05 13:13:29,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 314. [2021-06-05 13:13:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 2.2396166134185305) internal successors, (701), 313 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 701 transitions. [2021-06-05 13:13:29,458 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 701 transitions. Word has length 26 [2021-06-05 13:13:29,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:29,458 INFO L482 AbstractCegarLoop]: Abstraction has 314 states and 701 transitions. [2021-06-05 13:13:29,458 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:29,458 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 701 transitions. [2021-06-05 13:13:29,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:29,458 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:29,459 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:29,459 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2021-06-05 13:13:29,459 INFO L430 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:29,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:29,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1667639142, now seen corresponding path program 401 times [2021-06-05 13:13:29,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:29,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295814598] [2021-06-05 13:13:29,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:29,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:29,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:29,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295814598] [2021-06-05 13:13:29,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295814598] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:29,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:29,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:29,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238940112] [2021-06-05 13:13:29,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:29,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:29,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:29,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:29,517 INFO L87 Difference]: Start difference. First operand 314 states and 701 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:29,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:29,644 INFO L93 Difference]: Finished difference Result 411 states and 939 transitions. [2021-06-05 13:13:29,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:29,644 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:29,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:29,645 INFO L225 Difference]: With dead ends: 411 [2021-06-05 13:13:29,645 INFO L226 Difference]: Without dead ends: 282 [2021-06-05 13:13:29,645 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:29,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-06-05 13:13:29,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 273. [2021-06-05 13:13:29,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 2.2426470588235294) internal successors, (610), 272 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:29,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 610 transitions. [2021-06-05 13:13:29,647 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 610 transitions. Word has length 26 [2021-06-05 13:13:29,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:29,647 INFO L482 AbstractCegarLoop]: Abstraction has 273 states and 610 transitions. [2021-06-05 13:13:29,647 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:29,647 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 610 transitions. [2021-06-05 13:13:29,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:29,648 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:29,648 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:29,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2021-06-05 13:13:29,648 INFO L430 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:29,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:29,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1477860122, now seen corresponding path program 402 times [2021-06-05 13:13:29,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:29,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562673623] [2021-06-05 13:13:29,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:29,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:29,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562673623] [2021-06-05 13:13:29,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562673623] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:29,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:29,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:29,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787529660] [2021-06-05 13:13:29,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:29,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:29,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:29,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:29,726 INFO L87 Difference]: Start difference. First operand 273 states and 610 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:29,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:29,860 INFO L93 Difference]: Finished difference Result 364 states and 835 transitions. [2021-06-05 13:13:29,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:29,860 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:29,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:29,860 INFO L225 Difference]: With dead ends: 364 [2021-06-05 13:13:29,860 INFO L226 Difference]: Without dead ends: 253 [2021-06-05 13:13:29,860 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:29,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-06-05 13:13:29,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 244. [2021-06-05 13:13:29,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.2757201646090537) internal successors, (553), 243 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 553 transitions. [2021-06-05 13:13:29,863 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 553 transitions. Word has length 26 [2021-06-05 13:13:29,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:29,863 INFO L482 AbstractCegarLoop]: Abstraction has 244 states and 553 transitions. [2021-06-05 13:13:29,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:29,863 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 553 transitions. [2021-06-05 13:13:29,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:29,863 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:29,863 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:29,863 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2021-06-05 13:13:29,863 INFO L430 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:29,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:29,863 INFO L82 PathProgramCache]: Analyzing trace with hash -26978696, now seen corresponding path program 403 times [2021-06-05 13:13:29,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:29,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70326046] [2021-06-05 13:13:29,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:29,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:29,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:29,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70326046] [2021-06-05 13:13:29,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70326046] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:29,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:29,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:29,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633546500] [2021-06-05 13:13:29,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:29,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:29,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:29,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:29,923 INFO L87 Difference]: Start difference. First operand 244 states and 553 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:30,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:30,065 INFO L93 Difference]: Finished difference Result 350 states and 808 transitions. [2021-06-05 13:13:30,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:30,065 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:30,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:30,065 INFO L225 Difference]: With dead ends: 350 [2021-06-05 13:13:30,065 INFO L226 Difference]: Without dead ends: 250 [2021-06-05 13:13:30,065 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:30,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-06-05 13:13:30,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2021-06-05 13:13:30,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.271604938271605) internal successors, (552), 243 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:30,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 552 transitions. [2021-06-05 13:13:30,068 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 552 transitions. Word has length 26 [2021-06-05 13:13:30,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:30,068 INFO L482 AbstractCegarLoop]: Abstraction has 244 states and 552 transitions. [2021-06-05 13:13:30,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:30,068 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 552 transitions. [2021-06-05 13:13:30,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:30,068 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:30,068 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:30,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2021-06-05 13:13:30,068 INFO L430 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:30,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:30,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1697147684, now seen corresponding path program 404 times [2021-06-05 13:13:30,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:30,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870647848] [2021-06-05 13:13:30,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:30,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:30,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870647848] [2021-06-05 13:13:30,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870647848] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:30,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:30,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:30,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742500185] [2021-06-05 13:13:30,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:30,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:30,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:30,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:30,127 INFO L87 Difference]: Start difference. First operand 244 states and 552 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:30,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:30,265 INFO L93 Difference]: Finished difference Result 360 states and 826 transitions. [2021-06-05 13:13:30,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:30,266 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:30,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:30,266 INFO L225 Difference]: With dead ends: 360 [2021-06-05 13:13:30,266 INFO L226 Difference]: Without dead ends: 265 [2021-06-05 13:13:30,266 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:30,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-06-05 13:13:30,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2021-06-05 13:13:30,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 2.244186046511628) internal successors, (579), 258 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:30,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 579 transitions. [2021-06-05 13:13:30,269 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 579 transitions. Word has length 26 [2021-06-05 13:13:30,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:30,269 INFO L482 AbstractCegarLoop]: Abstraction has 259 states and 579 transitions. [2021-06-05 13:13:30,269 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:30,269 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 579 transitions. [2021-06-05 13:13:30,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:30,269 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:30,269 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:30,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2021-06-05 13:13:30,269 INFO L430 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:30,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:30,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1205675066, now seen corresponding path program 405 times [2021-06-05 13:13:30,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:30,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228557122] [2021-06-05 13:13:30,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:30,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:30,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:30,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228557122] [2021-06-05 13:13:30,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228557122] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:30,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:30,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:30,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214165975] [2021-06-05 13:13:30,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:30,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:30,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:30,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:30,328 INFO L87 Difference]: Start difference. First operand 259 states and 579 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:30,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:30,462 INFO L93 Difference]: Finished difference Result 368 states and 838 transitions. [2021-06-05 13:13:30,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:30,462 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:30,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:30,463 INFO L225 Difference]: With dead ends: 368 [2021-06-05 13:13:30,463 INFO L226 Difference]: Without dead ends: 268 [2021-06-05 13:13:30,463 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:30,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-06-05 13:13:30,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 257. [2021-06-05 13:13:30,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 2.24609375) internal successors, (575), 256 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:30,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 575 transitions. [2021-06-05 13:13:30,465 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 575 transitions. Word has length 26 [2021-06-05 13:13:30,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:30,465 INFO L482 AbstractCegarLoop]: Abstraction has 257 states and 575 transitions. [2021-06-05 13:13:30,465 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:30,465 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 575 transitions. [2021-06-05 13:13:30,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:30,465 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:30,465 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:30,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2021-06-05 13:13:30,466 INFO L430 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:30,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:30,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1087756786, now seen corresponding path program 406 times [2021-06-05 13:13:30,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:30,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966537382] [2021-06-05 13:13:30,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:30,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:30,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966537382] [2021-06-05 13:13:30,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966537382] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:30,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:30,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:30,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553708520] [2021-06-05 13:13:30,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:30,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:30,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:30,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:30,524 INFO L87 Difference]: Start difference. First operand 257 states and 575 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:30,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:30,656 INFO L93 Difference]: Finished difference Result 366 states and 838 transitions. [2021-06-05 13:13:30,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:30,656 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:30,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:30,657 INFO L225 Difference]: With dead ends: 366 [2021-06-05 13:13:30,657 INFO L226 Difference]: Without dead ends: 247 [2021-06-05 13:13:30,657 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:30,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-06-05 13:13:30,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2021-06-05 13:13:30,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.247967479674797) internal successors, (553), 246 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:30,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 553 transitions. [2021-06-05 13:13:30,659 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 553 transitions. Word has length 26 [2021-06-05 13:13:30,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:30,659 INFO L482 AbstractCegarLoop]: Abstraction has 247 states and 553 transitions. [2021-06-05 13:13:30,659 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:30,659 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 553 transitions. [2021-06-05 13:13:30,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:30,659 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:30,660 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:30,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2021-06-05 13:13:30,660 INFO L430 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:30,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:30,660 INFO L82 PathProgramCache]: Analyzing trace with hash -703725496, now seen corresponding path program 407 times [2021-06-05 13:13:30,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:30,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618708391] [2021-06-05 13:13:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:30,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:30,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618708391] [2021-06-05 13:13:30,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618708391] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:30,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:30,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:30,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570368701] [2021-06-05 13:13:30,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:30,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:30,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:30,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:30,742 INFO L87 Difference]: Start difference. First operand 247 states and 553 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:30,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:30,875 INFO L93 Difference]: Finished difference Result 339 states and 779 transitions. [2021-06-05 13:13:30,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:30,875 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:30,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:30,876 INFO L225 Difference]: With dead ends: 339 [2021-06-05 13:13:30,876 INFO L226 Difference]: Without dead ends: 230 [2021-06-05 13:13:30,876 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:30,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-06-05 13:13:30,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 217. [2021-06-05 13:13:30,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 2.2824074074074074) internal successors, (493), 216 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:30,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 493 transitions. [2021-06-05 13:13:30,878 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 493 transitions. Word has length 26 [2021-06-05 13:13:30,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:30,878 INFO L482 AbstractCegarLoop]: Abstraction has 217 states and 493 transitions. [2021-06-05 13:13:30,878 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:30,878 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 493 transitions. [2021-06-05 13:13:30,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:30,878 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:30,878 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:30,878 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2021-06-05 13:13:30,878 INFO L430 AbstractCegarLoop]: === Iteration 410 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:30,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:30,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1474886448, now seen corresponding path program 408 times [2021-06-05 13:13:30,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:30,879 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777060909] [2021-06-05 13:13:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:30,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:30,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:30,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777060909] [2021-06-05 13:13:30,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777060909] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:30,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:30,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:30,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518146665] [2021-06-05 13:13:30,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:30,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:30,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:30,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:30,938 INFO L87 Difference]: Start difference. First operand 217 states and 493 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:31,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:31,068 INFO L93 Difference]: Finished difference Result 318 states and 736 transitions. [2021-06-05 13:13:31,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:31,068 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:31,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:31,068 INFO L225 Difference]: With dead ends: 318 [2021-06-05 13:13:31,068 INFO L226 Difference]: Without dead ends: 213 [2021-06-05 13:13:31,068 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:31,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-06-05 13:13:31,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-06-05 13:13:31,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 2.2877358490566038) internal successors, (485), 212 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:31,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 485 transitions. [2021-06-05 13:13:31,070 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 485 transitions. Word has length 26 [2021-06-05 13:13:31,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:31,070 INFO L482 AbstractCegarLoop]: Abstraction has 213 states and 485 transitions. [2021-06-05 13:13:31,070 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:31,070 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 485 transitions. [2021-06-05 13:13:31,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:31,071 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:31,071 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:31,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2021-06-05 13:13:31,071 INFO L430 AbstractCegarLoop]: === Iteration 411 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:31,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:31,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1707700686, now seen corresponding path program 409 times [2021-06-05 13:13:31,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:31,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649590760] [2021-06-05 13:13:31,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:31,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:31,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649590760] [2021-06-05 13:13:31,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649590760] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:31,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:31,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 13:13:31,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561953894] [2021-06-05 13:13:31,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 13:13:31,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:31,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 13:13:31,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:31,121 INFO L87 Difference]: Start difference. First operand 213 states and 485 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:31,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:31,224 INFO L93 Difference]: Finished difference Result 318 states and 737 transitions. [2021-06-05 13:13:31,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 13:13:31,224 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:31,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:31,224 INFO L225 Difference]: With dead ends: 318 [2021-06-05 13:13:31,224 INFO L226 Difference]: Without dead ends: 215 [2021-06-05 13:13:31,224 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 13:13:31,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-06-05 13:13:31,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2021-06-05 13:13:31,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 2.2757009345794392) internal successors, (487), 214 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:31,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 487 transitions. [2021-06-05 13:13:31,226 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 487 transitions. Word has length 26 [2021-06-05 13:13:31,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:31,226 INFO L482 AbstractCegarLoop]: Abstraction has 215 states and 487 transitions. [2021-06-05 13:13:31,226 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:31,226 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 487 transitions. [2021-06-05 13:13:31,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:31,227 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:31,227 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:31,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2021-06-05 13:13:31,227 INFO L430 AbstractCegarLoop]: === Iteration 412 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:31,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:31,227 INFO L82 PathProgramCache]: Analyzing trace with hash 37531698, now seen corresponding path program 410 times [2021-06-05 13:13:31,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:31,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890906881] [2021-06-05 13:13:31,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:31,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:31,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:31,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890906881] [2021-06-05 13:13:31,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890906881] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:31,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:31,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:31,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678949517] [2021-06-05 13:13:31,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:31,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:31,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:31,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:31,286 INFO L87 Difference]: Start difference. First operand 215 states and 487 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:31,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:31,419 INFO L93 Difference]: Finished difference Result 325 states and 750 transitions. [2021-06-05 13:13:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:31,419 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:31,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:31,420 INFO L225 Difference]: With dead ends: 325 [2021-06-05 13:13:31,420 INFO L226 Difference]: Without dead ends: 227 [2021-06-05 13:13:31,420 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:31,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-06-05 13:13:31,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 220. [2021-06-05 13:13:31,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.278538812785388) internal successors, (499), 219 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:31,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 499 transitions. [2021-06-05 13:13:31,422 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 499 transitions. Word has length 26 [2021-06-05 13:13:31,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:31,422 INFO L482 AbstractCegarLoop]: Abstraction has 220 states and 499 transitions. [2021-06-05 13:13:31,422 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:31,422 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 499 transitions. [2021-06-05 13:13:31,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:31,422 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:31,422 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:31,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2021-06-05 13:13:31,422 INFO L430 AbstractCegarLoop]: === Iteration 413 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:31,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:31,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1354612848, now seen corresponding path program 411 times [2021-06-05 13:13:31,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:31,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861402087] [2021-06-05 13:13:31,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:31,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:31,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861402087] [2021-06-05 13:13:31,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861402087] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:31,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:31,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:31,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525850196] [2021-06-05 13:13:31,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:31,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:31,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:31,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:31,483 INFO L87 Difference]: Start difference. First operand 220 states and 499 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:31,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:31,610 INFO L93 Difference]: Finished difference Result 331 states and 761 transitions. [2021-06-05 13:13:31,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:31,610 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:31,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:31,610 INFO L225 Difference]: With dead ends: 331 [2021-06-05 13:13:31,610 INFO L226 Difference]: Without dead ends: 220 [2021-06-05 13:13:31,610 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:31,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-06-05 13:13:31,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2021-06-05 13:13:31,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.2672811059907834) internal successors, (492), 217 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:31,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 492 transitions. [2021-06-05 13:13:31,612 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 492 transitions. Word has length 26 [2021-06-05 13:13:31,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:31,613 INFO L482 AbstractCegarLoop]: Abstraction has 218 states and 492 transitions. [2021-06-05 13:13:31,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:31,613 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 492 transitions. [2021-06-05 13:13:31,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:31,613 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:31,613 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:31,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2021-06-05 13:13:31,613 INFO L430 AbstractCegarLoop]: === Iteration 414 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:31,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:31,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1023246392, now seen corresponding path program 412 times [2021-06-05 13:13:31,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:31,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235148521] [2021-06-05 13:13:31,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:31,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:31,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235148521] [2021-06-05 13:13:31,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235148521] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:31,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:31,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:31,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305351713] [2021-06-05 13:13:31,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:31,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:31,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:31,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:31,672 INFO L87 Difference]: Start difference. First operand 218 states and 492 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:31,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:31,793 INFO L93 Difference]: Finished difference Result 313 states and 725 transitions. [2021-06-05 13:13:31,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:31,794 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:31,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:31,794 INFO L225 Difference]: With dead ends: 313 [2021-06-05 13:13:31,794 INFO L226 Difference]: Without dead ends: 199 [2021-06-05 13:13:31,794 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:31,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-06-05 13:13:31,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2021-06-05 13:13:31,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.312820512820513) internal successors, (451), 195 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:31,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 451 transitions. [2021-06-05 13:13:31,796 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 451 transitions. Word has length 26 [2021-06-05 13:13:31,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:31,796 INFO L482 AbstractCegarLoop]: Abstraction has 196 states and 451 transitions. [2021-06-05 13:13:31,796 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:31,796 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 451 transitions. [2021-06-05 13:13:31,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:31,796 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:31,796 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:31,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2021-06-05 13:13:31,797 INFO L430 AbstractCegarLoop]: === Iteration 415 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:31,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:31,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1170207830, now seen corresponding path program 413 times [2021-06-05 13:13:31,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:31,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019841025] [2021-06-05 13:13:31,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:31,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:31,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019841025] [2021-06-05 13:13:31,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019841025] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:31,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:31,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:31,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110758562] [2021-06-05 13:13:31,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:31,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:31,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:31,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:31,859 INFO L87 Difference]: Start difference. First operand 196 states and 451 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:31,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:31,978 INFO L93 Difference]: Finished difference Result 296 states and 693 transitions. [2021-06-05 13:13:31,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:31,979 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:31,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:31,979 INFO L225 Difference]: With dead ends: 296 [2021-06-05 13:13:31,979 INFO L226 Difference]: Without dead ends: 191 [2021-06-05 13:13:31,979 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:31,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-06-05 13:13:31,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-06-05 13:13:31,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.3210526315789473) internal successors, (441), 190 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:31,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 441 transitions. [2021-06-05 13:13:31,981 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 441 transitions. Word has length 26 [2021-06-05 13:13:31,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:31,981 INFO L482 AbstractCegarLoop]: Abstraction has 191 states and 441 transitions. [2021-06-05 13:13:31,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:31,981 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 441 transitions. [2021-06-05 13:13:31,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:31,981 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:31,981 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:31,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2021-06-05 13:13:31,982 INFO L430 AbstractCegarLoop]: === Iteration 416 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:31,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:31,982 INFO L82 PathProgramCache]: Analyzing trace with hash -499961158, now seen corresponding path program 414 times [2021-06-05 13:13:31,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:31,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148260180] [2021-06-05 13:13:31,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:32,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:32,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:32,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148260180] [2021-06-05 13:13:32,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148260180] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:32,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:32,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:32,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531640044] [2021-06-05 13:13:32,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:32,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:32,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:32,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:32,040 INFO L87 Difference]: Start difference. First operand 191 states and 441 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:32,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:32,160 INFO L93 Difference]: Finished difference Result 294 states and 685 transitions. [2021-06-05 13:13:32,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:32,160 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:32,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:32,161 INFO L225 Difference]: With dead ends: 294 [2021-06-05 13:13:32,161 INFO L226 Difference]: Without dead ends: 181 [2021-06-05 13:13:32,161 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:32,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-06-05 13:13:32,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-06-05 13:13:32,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.3055555555555554) internal successors, (415), 180 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:32,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 415 transitions. [2021-06-05 13:13:32,163 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 415 transitions. Word has length 26 [2021-06-05 13:13:32,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:32,163 INFO L482 AbstractCegarLoop]: Abstraction has 181 states and 415 transitions. [2021-06-05 13:13:32,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:32,163 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 415 transitions. [2021-06-05 13:13:32,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:32,163 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:32,163 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:32,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2021-06-05 13:13:32,163 INFO L430 AbstractCegarLoop]: === Iteration 417 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:32,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:32,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1892105704, now seen corresponding path program 415 times [2021-06-05 13:13:32,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:32,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989900076] [2021-06-05 13:13:32,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:32,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:32,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:32,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989900076] [2021-06-05 13:13:32,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989900076] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:32,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:32,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:32,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747495028] [2021-06-05 13:13:32,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:32,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:32,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:32,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:32,252 INFO L87 Difference]: Start difference. First operand 181 states and 415 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:32,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:32,368 INFO L93 Difference]: Finished difference Result 282 states and 659 transitions. [2021-06-05 13:13:32,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:32,368 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:32,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:32,368 INFO L225 Difference]: With dead ends: 282 [2021-06-05 13:13:32,368 INFO L226 Difference]: Without dead ends: 179 [2021-06-05 13:13:32,368 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:32,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-06-05 13:13:32,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-06-05 13:13:32,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.308988764044944) internal successors, (411), 178 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:32,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 411 transitions. [2021-06-05 13:13:32,370 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 411 transitions. Word has length 26 [2021-06-05 13:13:32,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:32,370 INFO L482 AbstractCegarLoop]: Abstraction has 179 states and 411 transitions. [2021-06-05 13:13:32,370 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:32,370 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 411 transitions. [2021-06-05 13:13:32,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 13:13:32,371 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:13:32,371 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:13:32,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2021-06-05 13:13:32,371 INFO L430 AbstractCegarLoop]: === Iteration 418 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:13:32,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:13:32,371 INFO L82 PathProgramCache]: Analyzing trace with hash 493461030, now seen corresponding path program 416 times [2021-06-05 13:13:32,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:13:32,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963573190] [2021-06-05 13:13:32,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:13:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:13:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:13:32,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:13:32,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963573190] [2021-06-05 13:13:32,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963573190] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:13:32,441 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:13:32,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 13:13:32,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210497833] [2021-06-05 13:13:32,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 13:13:32,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:13:32,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 13:13:32,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:32,441 INFO L87 Difference]: Start difference. First operand 179 states and 411 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:32,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:13:32,536 INFO L93 Difference]: Finished difference Result 178 states and 410 transitions. [2021-06-05 13:13:32,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 13:13:32,536 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 13:13:32,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:13:32,537 INFO L225 Difference]: With dead ends: 178 [2021-06-05 13:13:32,537 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 13:13:32,537 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 13:13:32,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 13:13:32,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 13:13:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:32,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 13:13:32,537 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-06-05 13:13:32,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:13:32,537 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 13:13:32,537 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:13:32,537 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 13:13:32,537 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 13:13:32,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2021-06-05 13:13:32,539 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 13:13:32,541 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 01:13:32 BasicIcfg [2021-06-05 13:13:32,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 13:13:32,541 INFO L168 Benchmark]: Toolchain (without parser) took 107177.28 ms. Allocated memory was 346.0 MB in the beginning and 792.7 MB in the end (delta: 446.7 MB). Free memory was 325.1 MB in the beginning and 593.2 MB in the end (delta: -268.1 MB). Peak memory consumption was 179.0 MB. Max. memory is 16.0 GB. [2021-06-05 13:13:32,541 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 346.0 MB. Free memory is still 326.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 13:13:32,541 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.15 ms. Allocated memory is still 346.0 MB. Free memory was 325.1 MB in the beginning and 323.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 13:13:32,541 INFO L168 Benchmark]: Boogie Preprocessor took 11.38 ms. Allocated memory is still 346.0 MB. Free memory was 323.6 MB in the beginning and 322.8 MB in the end (delta: 787.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 13:13:32,542 INFO L168 Benchmark]: RCFGBuilder took 195.50 ms. Allocated memory is still 346.0 MB. Free memory was 322.8 MB in the beginning and 314.1 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-05 13:13:32,542 INFO L168 Benchmark]: TraceAbstraction took 106939.67 ms. Allocated memory was 346.0 MB in the beginning and 792.7 MB in the end (delta: 446.7 MB). Free memory was 313.7 MB in the beginning and 593.2 MB in the end (delta: -279.5 MB). Peak memory consumption was 168.5 MB. Max. memory is 16.0 GB. [2021-06-05 13:13:32,542 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 346.0 MB. Free memory is still 326.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.15 ms. Allocated memory is still 346.0 MB. Free memory was 325.1 MB in the beginning and 323.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.38 ms. Allocated memory is still 346.0 MB. Free memory was 323.6 MB in the beginning and 322.8 MB in the end (delta: 787.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 195.50 ms. Allocated memory is still 346.0 MB. Free memory was 322.8 MB in the beginning and 314.1 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 106939.67 ms. Allocated memory was 346.0 MB in the beginning and 792.7 MB in the end (delta: 446.7 MB). Free memory was 313.7 MB in the beginning and 593.2 MB in the end (delta: -279.5 MB). Peak memory consumption was 168.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 45]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 6 procedures, 42 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 106834.0ms, OverallIterations: 418, TraceHistogramMax: 1, EmptinessCheckTime: 562.7ms, AutomataDifference: 70918.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 192.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33617 SDtfs, 21628 SDslu, 185475 SDs, 0 SdLazy, 149233 SolverSat, 3871 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 51828.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3750 GetRequests, 109 SyntacticMatches, 416 SemanticMatches, 3225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22426.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1624occurred in iteration=103, InterpolantAutomatonStates: 4061, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6211.4ms AutomataMinimizationTime, 418 MinimizatonAttempts, 33805 StatesRemovedByMinimization, 402 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 137.4ms SsaConstructionTime, 445.0ms SatisfiabilityAnalysisTime, 27128.1ms InterpolantComputationTime, 10868 NumberOfCodeBlocks, 10868 NumberOfCodeBlocksAsserted, 418 NumberOfCheckSat, 10450 ConstructedInterpolants, 0 QuantifiedInterpolants, 87168 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 418 InterpolantComputations, 418 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...