/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.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 03:17:56,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 03:17:56,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 03:17:56,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 03:17:56,999 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.epf [2021-06-05 03:17:57,026 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 03:17:57,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 03:17:57,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 03:17:57,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 03:17:57,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 03:17:57,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 03:17:57,029 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 03:17:57,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 03:17:57,029 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 03:17:57,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 03:17:57,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 03:17:57,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 03:17:57,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 03:17:57,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 03:17:57,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 03:17:57,030 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 03:17:57,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 03:17:57,030 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 03:17:57,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 03:17:57,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 03:17:57,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 03:17:57,031 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 03:17:57,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 03:17:57,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 03:17:57,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 03:17:57,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 03:17:57,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 03:17:57,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 03:17:57,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 03:17:57,032 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 03:17:57,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 03:17:57,032 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 03:17:57,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 03:17:57,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 03:17:57,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 03:17:57,290 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 03:17:57,292 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 03:17:57,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl [2021-06-05 03:17:57,292 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl' [2021-06-05 03:17:57,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 03:17:57,325 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 03:17:57,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 03:17:57,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 03:17:57,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 03:17:57,335 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 03:17:57" (1/1) ... [2021-06-05 03:17:57,340 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 03:17:57" (1/1) ... [2021-06-05 03:17:57,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 03:17:57,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 03:17:57,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 03:17:57,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 03:17:57,353 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 03:17:57" (1/1) ... [2021-06-05 03:17:57,354 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 03:17:57" (1/1) ... [2021-06-05 03:17:57,354 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 03:17:57" (1/1) ... [2021-06-05 03:17:57,354 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 03:17:57" (1/1) ... [2021-06-05 03:17:57,355 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 03:17:57" (1/1) ... [2021-06-05 03:17:57,356 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 03:17:57" (1/1) ... [2021-06-05 03:17:57,356 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 03:17:57" (1/1) ... [2021-06-05 03:17:57,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 03:17:57,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 03:17:57,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 03:17:57,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 03:17:57,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:17:57" (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 03:17:57,419 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 03:17:57,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 03:17:57,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 03:17:57,420 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-06-05 03:17:57,420 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-06-05 03:17:57,420 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-06-05 03:17:57,421 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 03:17:57,534 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 03:17:57,535 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 03:17:57,536 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 03:17:57 BoogieIcfgContainer [2021-06-05 03:17:57,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 03:17:57,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 03:17:57,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 03:17:57,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 03:17:57,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:17:57" (1/2) ... [2021-06-05 03:17:57,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d158e55 and model type sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 03:17:57, skipping insertion in model container [2021-06-05 03:17:57,540 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 03:17:57" (2/2) ... [2021-06-05 03:17:57,541 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_invariant.bpl [2021-06-05 03:17:57,548 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 03:17:57,548 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 03:17:57,549 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 03:17:57,550 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 03:17:57,570 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,571 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,571 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,571 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,571 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,572 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,572 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,572 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,572 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,572 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,573 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,573 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,573 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,573 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,573 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,573 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,574 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,574 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,574 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,574 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,574 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,575 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,575 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,575 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,577 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,579 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,580 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,581 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:17:57,595 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-06-05 03:17:57,609 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-05 03:17:57,622 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 03:17:57,622 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 03:17:57,623 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 03:17:57,623 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 03:17:57,623 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 03:17:57,623 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 03:17:57,623 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 03:17:57,623 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 03:17:57,652 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 44 transitions, 156 flow [2021-06-05 03:17:57,801 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 03:17:57,808 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 03:17:57,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:17:57,826 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:17:57,826 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:17:57,827 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:17:57,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:17:57,835 INFO L82 PathProgramCache]: Analyzing trace with hash 376061866, now seen corresponding path program 1 times [2021-06-05 03:17:57,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:17:57,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387308032] [2021-06-05 03:17:57,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:17:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:17:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:17:57,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:17:57,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387308032] [2021-06-05 03:17:57,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387308032] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:17:57,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:17:57,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 03:17:57,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910168475] [2021-06-05 03:17:57,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 03:17:57,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:17:57,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 03:17:57,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:17:57,994 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 03:17:58,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:17:58,036 INFO L93 Difference]: Finished difference Result 1331 states and 4324 transitions. [2021-06-05 03:17:58,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 03:17:58,038 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 03:17:58,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:17:58,061 INFO L225 Difference]: With dead ends: 1331 [2021-06-05 03:17:58,061 INFO L226 Difference]: Without dead ends: 1329 [2021-06-05 03:17:58,062 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:17:58,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-05 03:17:58,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1329. [2021-06-05 03:17:58,154 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 03:17:58,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 4322 transitions. [2021-06-05 03:17:58,160 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 4322 transitions. Word has length 26 [2021-06-05 03:17:58,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:17:58,160 INFO L482 AbstractCegarLoop]: Abstraction has 1329 states and 4322 transitions. [2021-06-05 03:17:58,161 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 03:17:58,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 4322 transitions. [2021-06-05 03:17:58,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:17:58,165 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:17:58,165 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 03:17:58,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 03:17:58,165 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:17:58,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:17:58,168 INFO L82 PathProgramCache]: Analyzing trace with hash 2093674476, now seen corresponding path program 1 times [2021-06-05 03:17:58,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:17:58,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408580386] [2021-06-05 03:17:58,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:17:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:17:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:17:58,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:17:58,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408580386] [2021-06-05 03:17:58,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408580386] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:17:58,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:17:58,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 03:17:58,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938281994] [2021-06-05 03:17:58,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 03:17:58,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:17:58,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 03:17:58,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:17:58,229 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 03:17:58,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:17:58,246 INFO L93 Difference]: Finished difference Result 1114 states and 3592 transitions. [2021-06-05 03:17:58,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 03:17:58,246 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 03:17:58,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:17:58,252 INFO L225 Difference]: With dead ends: 1114 [2021-06-05 03:17:58,253 INFO L226 Difference]: Without dead ends: 1114 [2021-06-05 03:17:58,254 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:17:58,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2021-06-05 03:17:58,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1114. [2021-06-05 03:17:58,281 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 03:17:58,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 3592 transitions. [2021-06-05 03:17:58,285 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 3592 transitions. Word has length 26 [2021-06-05 03:17:58,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:17:58,286 INFO L482 AbstractCegarLoop]: Abstraction has 1114 states and 3592 transitions. [2021-06-05 03:17:58,286 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 03:17:58,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 3592 transitions. [2021-06-05 03:17:58,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:17:58,289 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:17:58,289 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:17:58,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 03:17:58,290 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:17:58,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:17:58,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1885399720, now seen corresponding path program 1 times [2021-06-05 03:17:58,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:17:58,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121983212] [2021-06-05 03:17:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:17:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:17:58,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:17:58,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:17:58,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121983212] [2021-06-05 03:17:58,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121983212] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:17:58,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:17:58,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 03:17:58,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517165350] [2021-06-05 03:17:58,427 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:17:58,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:17:58,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:17:58,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:17:58,428 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 03:17:58,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:17:58,592 INFO L93 Difference]: Finished difference Result 1876 states and 5924 transitions. [2021-06-05 03:17:58,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:17:58,593 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 03:17:58,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:17:58,601 INFO L225 Difference]: With dead ends: 1876 [2021-06-05 03:17:58,601 INFO L226 Difference]: Without dead ends: 1614 [2021-06-05 03:17:58,602 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.3ms TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:17:58,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2021-06-05 03:17:58,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1614. [2021-06-05 03:17:58,637 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 03:17:58,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 5058 transitions. [2021-06-05 03:17:58,642 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 5058 transitions. Word has length 26 [2021-06-05 03:17:58,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:17:58,642 INFO L482 AbstractCegarLoop]: Abstraction has 1614 states and 5058 transitions. [2021-06-05 03:17:58,642 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 03:17:58,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 5058 transitions. [2021-06-05 03:17:58,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:17:58,647 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:17:58,648 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 03:17:58,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 03:17:58,648 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:17:58,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:17:58,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1549982582, now seen corresponding path program 2 times [2021-06-05 03:17:58,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:17:58,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175063190] [2021-06-05 03:17:58,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:17:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:17:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:17:58,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:17:58,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175063190] [2021-06-05 03:17:58,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175063190] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:17:58,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:17:58,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:17:58,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127600078] [2021-06-05 03:17:58,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:17:58,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:17:58,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:17:58,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:17:58,782 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 03:17:58,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:17:58,937 INFO L93 Difference]: Finished difference Result 1887 states and 5832 transitions. [2021-06-05 03:17:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:17:58,937 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 03:17:58,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:17:58,944 INFO L225 Difference]: With dead ends: 1887 [2021-06-05 03:17:58,945 INFO L226 Difference]: Without dead ends: 1628 [2021-06-05 03:17:58,945 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.8ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:17:58,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2021-06-05 03:17:58,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1508. [2021-06-05 03:17:58,991 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 03:17:58,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 4726 transitions. [2021-06-05 03:17:58,997 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 4726 transitions. Word has length 26 [2021-06-05 03:17:58,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:17:58,997 INFO L482 AbstractCegarLoop]: Abstraction has 1508 states and 4726 transitions. [2021-06-05 03:17:58,997 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 03:17:58,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 4726 transitions. [2021-06-05 03:17:59,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:17:59,001 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:17:59,001 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:17:59,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 03:17:59,001 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:17:59,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:17:59,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1650467594, now seen corresponding path program 3 times [2021-06-05 03:17:59,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:17:59,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736703944] [2021-06-05 03:17:59,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:17:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:17:59,101 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 03:17:59,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:17:59,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736703944] [2021-06-05 03:17:59,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736703944] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:17:59,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:17:59,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:17:59,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452699779] [2021-06-05 03:17:59,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:17:59,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:17:59,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:17:59,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:17:59,104 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 03:17:59,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:17:59,244 INFO L93 Difference]: Finished difference Result 1901 states and 5814 transitions. [2021-06-05 03:17:59,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:17:59,244 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 03:17:59,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:17:59,252 INFO L225 Difference]: With dead ends: 1901 [2021-06-05 03:17:59,252 INFO L226 Difference]: Without dead ends: 1646 [2021-06-05 03:17:59,253 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:17:59,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2021-06-05 03:17:59,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1458. [2021-06-05 03:17:59,304 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 03:17:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 4554 transitions. [2021-06-05 03:17:59,308 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 4554 transitions. Word has length 26 [2021-06-05 03:17:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:17:59,308 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 4554 transitions. [2021-06-05 03:17:59,309 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 03:17:59,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 4554 transitions. [2021-06-05 03:17:59,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:17:59,311 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:17:59,311 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:17:59,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 03:17:59,312 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:17:59,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:17:59,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1784914708, now seen corresponding path program 4 times [2021-06-05 03:17:59,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:17:59,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633849661] [2021-06-05 03:17:59,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:17:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:17:59,392 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 03:17:59,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:17:59,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633849661] [2021-06-05 03:17:59,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633849661] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:17:59,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:17:59,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:17:59,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024851320] [2021-06-05 03:17:59,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:17:59,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:17:59,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:17:59,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:17:59,393 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 03:17:59,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:17:59,551 INFO L93 Difference]: Finished difference Result 1678 states and 5178 transitions. [2021-06-05 03:17:59,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:17:59,551 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 03:17:59,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:17:59,557 INFO L225 Difference]: With dead ends: 1678 [2021-06-05 03:17:59,558 INFO L226 Difference]: Without dead ends: 1484 [2021-06-05 03:17:59,558 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:17:59,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2021-06-05 03:17:59,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1406. [2021-06-05 03:17:59,587 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 03:17:59,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4398 transitions. [2021-06-05 03:17:59,591 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4398 transitions. Word has length 26 [2021-06-05 03:17:59,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:17:59,591 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 4398 transitions. [2021-06-05 03:17:59,591 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 03:17:59,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4398 transitions. [2021-06-05 03:17:59,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:17:59,594 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:17:59,594 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 03:17:59,594 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 03:17:59,594 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:17:59,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:17:59,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1096030702, now seen corresponding path program 5 times [2021-06-05 03:17:59,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:17:59,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971558539] [2021-06-05 03:17:59,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:17:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:17:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:17:59,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:17:59,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971558539] [2021-06-05 03:17:59,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971558539] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:17:59,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:17:59,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:17:59,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502499193] [2021-06-05 03:17:59,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:17:59,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:17:59,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:17:59,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:17:59,669 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 03:17:59,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:17:59,800 INFO L93 Difference]: Finished difference Result 1788 states and 5480 transitions. [2021-06-05 03:17:59,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:17:59,801 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 03:17:59,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:17:59,807 INFO L225 Difference]: With dead ends: 1788 [2021-06-05 03:17:59,807 INFO L226 Difference]: Without dead ends: 1647 [2021-06-05 03:17:59,808 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.4ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:17:59,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-06-05 03:17:59,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1463. [2021-06-05 03:17:59,837 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 03:17:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 4576 transitions. [2021-06-05 03:17:59,841 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 4576 transitions. Word has length 26 [2021-06-05 03:17:59,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:17:59,841 INFO L482 AbstractCegarLoop]: Abstraction has 1463 states and 4576 transitions. [2021-06-05 03:17:59,841 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 03:17:59,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 4576 transitions. [2021-06-05 03:17:59,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:17:59,844 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:17:59,844 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:17:59,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 03:17:59,844 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:17:59,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:17:59,844 INFO L82 PathProgramCache]: Analyzing trace with hash 662642804, now seen corresponding path program 6 times [2021-06-05 03:17:59,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:17:59,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454863203] [2021-06-05 03:17:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:17:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:17:59,911 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 03:17:59,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:17:59,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454863203] [2021-06-05 03:17:59,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454863203] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:17:59,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:17:59,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:17:59,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94808252] [2021-06-05 03:17:59,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:17:59,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:17:59,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:17:59,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:17:59,912 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 03:18:00,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:00,060 INFO L93 Difference]: Finished difference Result 1778 states and 5460 transitions. [2021-06-05 03:18:00,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:00,060 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 03:18:00,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:00,066 INFO L225 Difference]: With dead ends: 1778 [2021-06-05 03:18:00,067 INFO L226 Difference]: Without dead ends: 1649 [2021-06-05 03:18:00,067 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:00,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-06-05 03:18:00,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1488. [2021-06-05 03:18:00,093 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 03:18:00,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 4654 transitions. [2021-06-05 03:18:00,097 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 4654 transitions. Word has length 26 [2021-06-05 03:18:00,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:00,097 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 4654 transitions. [2021-06-05 03:18:00,097 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 03:18:00,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 4654 transitions. [2021-06-05 03:18:00,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:00,100 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:00,100 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:00,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 03:18:00,100 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:00,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:00,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1532087412, now seen corresponding path program 7 times [2021-06-05 03:18:00,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:00,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658136195] [2021-06-05 03:18:00,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:00,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:00,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658136195] [2021-06-05 03:18:00,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658136195] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:00,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:00,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:00,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466927884] [2021-06-05 03:18:00,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:00,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:00,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:00,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:00,164 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 03:18:00,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:00,316 INFO L93 Difference]: Finished difference Result 1806 states and 5565 transitions. [2021-06-05 03:18:00,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:00,317 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 03:18:00,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:00,323 INFO L225 Difference]: With dead ends: 1806 [2021-06-05 03:18:00,323 INFO L226 Difference]: Without dead ends: 1647 [2021-06-05 03:18:00,323 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 03:18:00,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-06-05 03:18:00,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1509. [2021-06-05 03:18:00,365 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 03:18:00,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 4715 transitions. [2021-06-05 03:18:00,369 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 4715 transitions. Word has length 26 [2021-06-05 03:18:00,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:00,370 INFO L482 AbstractCegarLoop]: Abstraction has 1509 states and 4715 transitions. [2021-06-05 03:18:00,371 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 03:18:00,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 4715 transitions. [2021-06-05 03:18:00,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:00,374 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:00,374 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:00,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 03:18:00,374 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:00,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:00,374 INFO L82 PathProgramCache]: Analyzing trace with hash 63376182, now seen corresponding path program 8 times [2021-06-05 03:18:00,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:00,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903933734] [2021-06-05 03:18:00,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:00,459 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 03:18:00,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:00,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903933734] [2021-06-05 03:18:00,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903933734] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:00,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:00,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:00,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000518295] [2021-06-05 03:18:00,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:00,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:00,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:00,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:00,461 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 03:18:00,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:00,638 INFO L93 Difference]: Finished difference Result 1852 states and 5672 transitions. [2021-06-05 03:18:00,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:00,638 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 03:18:00,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:00,656 INFO L225 Difference]: With dead ends: 1852 [2021-06-05 03:18:00,656 INFO L226 Difference]: Without dead ends: 1713 [2021-06-05 03:18:00,656 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 03:18:00,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2021-06-05 03:18:00,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1499. [2021-06-05 03:18:00,681 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 03:18:00,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 4685 transitions. [2021-06-05 03:18:00,684 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 4685 transitions. Word has length 26 [2021-06-05 03:18:00,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:00,685 INFO L482 AbstractCegarLoop]: Abstraction has 1499 states and 4685 transitions. [2021-06-05 03:18:00,685 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 03:18:00,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 4685 transitions. [2021-06-05 03:18:00,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:00,687 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:00,687 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:00,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 03:18:00,688 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:00,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:00,688 INFO L82 PathProgramCache]: Analyzing trace with hash 53973816, now seen corresponding path program 9 times [2021-06-05 03:18:00,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:00,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804433091] [2021-06-05 03:18:00,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:00,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:00,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804433091] [2021-06-05 03:18:00,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804433091] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:00,772 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:00,772 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:18:00,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522320266] [2021-06-05 03:18:00,772 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:18:00,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:00,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:18:00,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:18:00,774 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 03:18:00,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:00,903 INFO L93 Difference]: Finished difference Result 1849 states and 5664 transitions. [2021-06-05 03:18:00,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:18:00,904 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 03:18:00,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:00,908 INFO L225 Difference]: With dead ends: 1849 [2021-06-05 03:18:00,908 INFO L226 Difference]: Without dead ends: 1708 [2021-06-05 03:18:00,908 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.7ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:18:00,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2021-06-05 03:18:00,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1525. [2021-06-05 03:18:00,932 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 03:18:00,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 4765 transitions. [2021-06-05 03:18:00,935 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 4765 transitions. Word has length 26 [2021-06-05 03:18:00,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:00,935 INFO L482 AbstractCegarLoop]: Abstraction has 1525 states and 4765 transitions. [2021-06-05 03:18:00,935 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 03:18:00,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 4765 transitions. [2021-06-05 03:18:00,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:00,937 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:00,937 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:00,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 03:18:00,938 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:00,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:00,938 INFO L82 PathProgramCache]: Analyzing trace with hash 923418424, now seen corresponding path program 10 times [2021-06-05 03:18:00,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:00,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148247300] [2021-06-05 03:18:00,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:01,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:01,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:01,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148247300] [2021-06-05 03:18:01,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148247300] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:01,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:01,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:01,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394696982] [2021-06-05 03:18:01,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:01,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:01,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:01,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:01,009 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 03:18:01,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:01,148 INFO L93 Difference]: Finished difference Result 1932 states and 5906 transitions. [2021-06-05 03:18:01,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:01,149 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 03:18:01,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:01,152 INFO L225 Difference]: With dead ends: 1932 [2021-06-05 03:18:01,152 INFO L226 Difference]: Without dead ends: 1665 [2021-06-05 03:18:01,153 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:01,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2021-06-05 03:18:01,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1415. [2021-06-05 03:18:01,175 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 03:18:01,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 4371 transitions. [2021-06-05 03:18:01,177 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 4371 transitions. Word has length 26 [2021-06-05 03:18:01,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:01,178 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 4371 transitions. [2021-06-05 03:18:01,178 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 03:18:01,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 4371 transitions. [2021-06-05 03:18:01,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:01,180 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:01,180 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:01,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 03:18:01,180 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:01,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:01,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1663766954, now seen corresponding path program 11 times [2021-06-05 03:18:01,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:01,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079531012] [2021-06-05 03:18:01,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:01,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:01,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:01,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079531012] [2021-06-05 03:18:01,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079531012] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:01,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:01,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:01,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549304248] [2021-06-05 03:18:01,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:01,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:01,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:01,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:01,245 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 03:18:01,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:01,396 INFO L93 Difference]: Finished difference Result 1661 states and 5048 transitions. [2021-06-05 03:18:01,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:01,397 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 03:18:01,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:01,399 INFO L225 Difference]: With dead ends: 1661 [2021-06-05 03:18:01,400 INFO L226 Difference]: Without dead ends: 1528 [2021-06-05 03:18:01,400 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:01,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-06-05 03:18:01,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1405. [2021-06-05 03:18:01,421 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 03:18:01,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 4334 transitions. [2021-06-05 03:18:01,423 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 4334 transitions. Word has length 26 [2021-06-05 03:18:01,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:01,423 INFO L482 AbstractCegarLoop]: Abstraction has 1405 states and 4334 transitions. [2021-06-05 03:18:01,423 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 03:18:01,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 4334 transitions. [2021-06-05 03:18:01,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:01,425 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:01,425 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:01,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 03:18:01,426 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:01,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:01,426 INFO L82 PathProgramCache]: Analyzing trace with hash -794322346, now seen corresponding path program 12 times [2021-06-05 03:18:01,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:01,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199091062] [2021-06-05 03:18:01,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:01,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:01,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:01,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199091062] [2021-06-05 03:18:01,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199091062] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:01,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:01,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:01,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635590327] [2021-06-05 03:18:01,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:01,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:01,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:01,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:01,482 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 03:18:01,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:01,644 INFO L93 Difference]: Finished difference Result 1871 states and 5674 transitions. [2021-06-05 03:18:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:01,644 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 03:18:01,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:01,647 INFO L225 Difference]: With dead ends: 1871 [2021-06-05 03:18:01,648 INFO L226 Difference]: Without dead ends: 1726 [2021-06-05 03:18:01,648 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:01,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-06-05 03:18:01,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1433. [2021-06-05 03:18:01,671 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 03:18:01,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 4419 transitions. [2021-06-05 03:18:01,673 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 4419 transitions. Word has length 26 [2021-06-05 03:18:01,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:01,673 INFO L482 AbstractCegarLoop]: Abstraction has 1433 states and 4419 transitions. [2021-06-05 03:18:01,673 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 03:18:01,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 4419 transitions. [2021-06-05 03:18:01,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:01,682 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:01,682 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 03:18:01,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 03:18:01,683 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:01,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:01,683 INFO L82 PathProgramCache]: Analyzing trace with hash 2045087292, now seen corresponding path program 13 times [2021-06-05 03:18:01,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:01,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511148492] [2021-06-05 03:18:01,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:01,741 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 03:18:01,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:01,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511148492] [2021-06-05 03:18:01,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511148492] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:01,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:01,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:01,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998669071] [2021-06-05 03:18:01,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:01,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:01,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:01,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:01,743 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 03:18:01,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:01,886 INFO L93 Difference]: Finished difference Result 1746 states and 5285 transitions. [2021-06-05 03:18:01,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:01,887 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 03:18:01,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:01,890 INFO L225 Difference]: With dead ends: 1746 [2021-06-05 03:18:01,890 INFO L226 Difference]: Without dead ends: 1561 [2021-06-05 03:18:01,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:01,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-06-05 03:18:01,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1389. [2021-06-05 03:18:01,910 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 03:18:01,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 4285 transitions. [2021-06-05 03:18:01,913 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 4285 transitions. Word has length 26 [2021-06-05 03:18:01,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:01,913 INFO L482 AbstractCegarLoop]: Abstraction has 1389 states and 4285 transitions. [2021-06-05 03:18:01,913 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 03:18:01,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 4285 transitions. [2021-06-05 03:18:01,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:01,915 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:01,915 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 03:18:01,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 03:18:01,915 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:01,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:01,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1140197304, now seen corresponding path program 14 times [2021-06-05 03:18:01,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:01,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743796427] [2021-06-05 03:18:01,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:01,979 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 03:18:01,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:01,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743796427] [2021-06-05 03:18:01,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743796427] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:01,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:01,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:01,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245475851] [2021-06-05 03:18:01,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:01,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:01,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:01,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:01,981 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 03:18:02,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:02,126 INFO L93 Difference]: Finished difference Result 1686 states and 5109 transitions. [2021-06-05 03:18:02,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:02,126 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 03:18:02,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:02,129 INFO L225 Difference]: With dead ends: 1686 [2021-06-05 03:18:02,129 INFO L226 Difference]: Without dead ends: 1511 [2021-06-05 03:18:02,129 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:02,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2021-06-05 03:18:02,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1339. [2021-06-05 03:18:02,150 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 03:18:02,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 4135 transitions. [2021-06-05 03:18:02,153 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 4135 transitions. Word has length 26 [2021-06-05 03:18:02,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:02,153 INFO L482 AbstractCegarLoop]: Abstraction has 1339 states and 4135 transitions. [2021-06-05 03:18:02,153 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 03:18:02,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 4135 transitions. [2021-06-05 03:18:02,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:02,155 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:02,155 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:02,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 03:18:02,156 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:02,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:02,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1396096486, now seen corresponding path program 15 times [2021-06-05 03:18:02,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:02,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173048132] [2021-06-05 03:18:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:02,221 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 03:18:02,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:02,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173048132] [2021-06-05 03:18:02,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173048132] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:02,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:02,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:02,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035888184] [2021-06-05 03:18:02,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:02,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:02,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:02,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:02,224 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 03:18:02,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:02,359 INFO L93 Difference]: Finished difference Result 1627 states and 4941 transitions. [2021-06-05 03:18:02,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:02,360 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 03:18:02,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:02,363 INFO L225 Difference]: With dead ends: 1627 [2021-06-05 03:18:02,363 INFO L226 Difference]: Without dead ends: 1462 [2021-06-05 03:18:02,363 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:02,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-06-05 03:18:02,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1322. [2021-06-05 03:18:02,383 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 03:18:02,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 4086 transitions. [2021-06-05 03:18:02,386 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 4086 transitions. Word has length 26 [2021-06-05 03:18:02,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:02,386 INFO L482 AbstractCegarLoop]: Abstraction has 1322 states and 4086 transitions. [2021-06-05 03:18:02,386 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 03:18:02,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 4086 transitions. [2021-06-05 03:18:02,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:02,388 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:02,388 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 03:18:02,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 03:18:02,388 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:02,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:02,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1995363108, now seen corresponding path program 16 times [2021-06-05 03:18:02,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:02,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682688648] [2021-06-05 03:18:02,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:02,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:02,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682688648] [2021-06-05 03:18:02,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682688648] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:02,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:02,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:02,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039404693] [2021-06-05 03:18:02,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:02,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:02,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:02,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:02,440 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 03:18:02,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:02,568 INFO L93 Difference]: Finished difference Result 1728 states and 5256 transitions. [2021-06-05 03:18:02,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:02,568 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 03:18:02,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:02,571 INFO L225 Difference]: With dead ends: 1728 [2021-06-05 03:18:02,571 INFO L226 Difference]: Without dead ends: 1573 [2021-06-05 03:18:02,572 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:02,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-06-05 03:18:02,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1301. [2021-06-05 03:18:02,591 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 03:18:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 4021 transitions. [2021-06-05 03:18:02,593 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 4021 transitions. Word has length 26 [2021-06-05 03:18:02,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:02,593 INFO L482 AbstractCegarLoop]: Abstraction has 1301 states and 4021 transitions. [2021-06-05 03:18:02,593 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 03:18:02,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 4021 transitions. [2021-06-05 03:18:02,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:02,595 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:02,595 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:02,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 03:18:02,595 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:02,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:02,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1729596350, now seen corresponding path program 17 times [2021-06-05 03:18:02,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:02,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448021580] [2021-06-05 03:18:02,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:02,672 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 03:18:02,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:02,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448021580] [2021-06-05 03:18:02,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448021580] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:02,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:02,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:02,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291830591] [2021-06-05 03:18:02,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:02,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:02,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:02,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:02,674 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 03:18:02,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:02,840 INFO L93 Difference]: Finished difference Result 1527 states and 4646 transitions. [2021-06-05 03:18:02,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:02,841 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 03:18:02,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:02,843 INFO L225 Difference]: With dead ends: 1527 [2021-06-05 03:18:02,843 INFO L226 Difference]: Without dead ends: 1316 [2021-06-05 03:18:02,844 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 03:18:02,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-06-05 03:18:02,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1138. [2021-06-05 03:18:02,865 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 03:18:02,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 3549 transitions. [2021-06-05 03:18:02,867 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 3549 transitions. Word has length 26 [2021-06-05 03:18:02,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:02,867 INFO L482 AbstractCegarLoop]: Abstraction has 1138 states and 3549 transitions. [2021-06-05 03:18:02,868 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 03:18:02,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 3549 transitions. [2021-06-05 03:18:02,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:02,869 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:02,869 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:02,869 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 03:18:02,870 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:02,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:02,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1402742104, now seen corresponding path program 18 times [2021-06-05 03:18:02,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:02,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093660254] [2021-06-05 03:18:02,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:02,937 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 03:18:02,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:02,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093660254] [2021-06-05 03:18:02,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093660254] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:02,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:02,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:18:02,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098014842] [2021-06-05 03:18:02,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:18:02,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:02,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:18:02,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:18:02,939 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 03:18:03,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:03,063 INFO L93 Difference]: Finished difference Result 1698 states and 5175 transitions. [2021-06-05 03:18:03,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:18:03,063 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 03:18:03,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:03,066 INFO L225 Difference]: With dead ends: 1698 [2021-06-05 03:18:03,067 INFO L226 Difference]: Without dead ends: 1446 [2021-06-05 03:18:03,067 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.6ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:18:03,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-06-05 03:18:03,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1252. [2021-06-05 03:18:03,085 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 03:18:03,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3852 transitions. [2021-06-05 03:18:03,089 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3852 transitions. Word has length 26 [2021-06-05 03:18:03,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:03,089 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3852 transitions. [2021-06-05 03:18:03,090 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 03:18:03,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3852 transitions. [2021-06-05 03:18:03,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:03,091 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:03,091 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:03,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 03:18:03,092 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:03,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:03,092 INFO L82 PathProgramCache]: Analyzing trace with hash 543157110, now seen corresponding path program 19 times [2021-06-05 03:18:03,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:03,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249038045] [2021-06-05 03:18:03,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:03,145 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 03:18:03,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:03,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249038045] [2021-06-05 03:18:03,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249038045] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:03,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:03,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:03,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133286911] [2021-06-05 03:18:03,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:03,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:03,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:03,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:03,146 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 03:18:03,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:03,273 INFO L93 Difference]: Finished difference Result 1559 states and 4705 transitions. [2021-06-05 03:18:03,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:03,274 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 03:18:03,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:03,276 INFO L225 Difference]: With dead ends: 1559 [2021-06-05 03:18:03,276 INFO L226 Difference]: Without dead ends: 1310 [2021-06-05 03:18:03,277 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:03,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-06-05 03:18:03,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1106. [2021-06-05 03:18:03,293 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 03:18:03,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 3413 transitions. [2021-06-05 03:18:03,294 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 3413 transitions. Word has length 26 [2021-06-05 03:18:03,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:03,294 INFO L482 AbstractCegarLoop]: Abstraction has 1106 states and 3413 transitions. [2021-06-05 03:18:03,295 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 03:18:03,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 3413 transitions. [2021-06-05 03:18:03,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:03,296 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:03,296 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:03,296 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 03:18:03,296 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:03,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:03,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1637674230, now seen corresponding path program 20 times [2021-06-05 03:18:03,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:03,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858112008] [2021-06-05 03:18:03,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:03,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:03,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:03,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858112008] [2021-06-05 03:18:03,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858112008] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:03,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:03,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:03,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773972588] [2021-06-05 03:18:03,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:03,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:03,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:03,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:03,392 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 03:18:03,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:03,553 INFO L93 Difference]: Finished difference Result 1455 states and 4380 transitions. [2021-06-05 03:18:03,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:03,554 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 03:18:03,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:03,556 INFO L225 Difference]: With dead ends: 1455 [2021-06-05 03:18:03,556 INFO L226 Difference]: Without dead ends: 1268 [2021-06-05 03:18:03,556 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:03,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2021-06-05 03:18:03,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1116. [2021-06-05 03:18:03,573 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 03:18:03,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 3431 transitions. [2021-06-05 03:18:03,575 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 3431 transitions. Word has length 26 [2021-06-05 03:18:03,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:03,575 INFO L482 AbstractCegarLoop]: Abstraction has 1116 states and 3431 transitions. [2021-06-05 03:18:03,575 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 03:18:03,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 3431 transitions. [2021-06-05 03:18:03,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:03,576 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:03,576 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:03,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 03:18:03,576 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:03,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:03,578 INFO L82 PathProgramCache]: Analyzing trace with hash 778089236, now seen corresponding path program 21 times [2021-06-05 03:18:03,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:03,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168052530] [2021-06-05 03:18:03,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:03,665 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 03:18:03,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:03,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168052530] [2021-06-05 03:18:03,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168052530] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:03,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:03,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:03,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495154820] [2021-06-05 03:18:03,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:03,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:03,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:03,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:03,667 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 03:18:03,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:03,828 INFO L93 Difference]: Finished difference Result 1381 states and 4160 transitions. [2021-06-05 03:18:03,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:03,828 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:03,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:03,830 INFO L225 Difference]: With dead ends: 1381 [2021-06-05 03:18:03,830 INFO L226 Difference]: Without dead ends: 1226 [2021-06-05 03:18:03,830 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:03,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-06-05 03:18:03,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1090. [2021-06-05 03:18:03,845 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 03:18:03,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 3365 transitions. [2021-06-05 03:18:03,846 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 3365 transitions. Word has length 26 [2021-06-05 03:18:03,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:03,846 INFO L482 AbstractCegarLoop]: Abstraction has 1090 states and 3365 transitions. [2021-06-05 03:18:03,846 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:03,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 3365 transitions. [2021-06-05 03:18:03,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:03,848 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:03,848 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:03,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 03:18:03,848 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:03,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:03,849 INFO L82 PathProgramCache]: Analyzing trace with hash -2102856174, now seen corresponding path program 22 times [2021-06-05 03:18:03,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:03,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924699352] [2021-06-05 03:18:03,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:03,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:03,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924699352] [2021-06-05 03:18:03,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924699352] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:03,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:03,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:03,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575628164] [2021-06-05 03:18:03,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:03,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:03,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:03,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:03,927 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 03:18:04,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:04,059 INFO L93 Difference]: Finished difference Result 1426 states and 4315 transitions. [2021-06-05 03:18:04,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:04,060 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 03:18:04,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:04,062 INFO L225 Difference]: With dead ends: 1426 [2021-06-05 03:18:04,062 INFO L226 Difference]: Without dead ends: 1303 [2021-06-05 03:18:04,062 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:04,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-06-05 03:18:04,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1149. [2021-06-05 03:18:04,080 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 03:18:04,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 3546 transitions. [2021-06-05 03:18:04,082 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 3546 transitions. Word has length 26 [2021-06-05 03:18:04,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:04,082 INFO L482 AbstractCegarLoop]: Abstraction has 1149 states and 3546 transitions. [2021-06-05 03:18:04,082 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 03:18:04,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 3546 transitions. [2021-06-05 03:18:04,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:04,083 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:04,083 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:04,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 03:18:04,084 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:04,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:04,084 INFO L82 PathProgramCache]: Analyzing trace with hash -344182668, now seen corresponding path program 23 times [2021-06-05 03:18:04,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:04,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999712946] [2021-06-05 03:18:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:04,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:04,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:04,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999712946] [2021-06-05 03:18:04,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999712946] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:04,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:04,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:04,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613006892] [2021-06-05 03:18:04,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:04,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:04,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:04,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:04,149 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 03:18:04,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:04,315 INFO L93 Difference]: Finished difference Result 1438 states and 4359 transitions. [2021-06-05 03:18:04,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:04,315 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:04,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:04,317 INFO L225 Difference]: With dead ends: 1438 [2021-06-05 03:18:04,317 INFO L226 Difference]: Without dead ends: 1327 [2021-06-05 03:18:04,318 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:04,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2021-06-05 03:18:04,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1164. [2021-06-05 03:18:04,332 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 03:18:04,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 3592 transitions. [2021-06-05 03:18:04,334 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 3592 transitions. Word has length 26 [2021-06-05 03:18:04,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:04,334 INFO L482 AbstractCegarLoop]: Abstraction has 1164 states and 3592 transitions. [2021-06-05 03:18:04,334 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 03:18:04,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 3592 transitions. [2021-06-05 03:18:04,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:04,336 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:04,336 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 03:18:04,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 03:18:04,337 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:04,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:04,338 INFO L82 PathProgramCache]: Analyzing trace with hash 525261940, now seen corresponding path program 24 times [2021-06-05 03:18:04,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:04,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161066217] [2021-06-05 03:18:04,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:04,404 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 03:18:04,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:04,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161066217] [2021-06-05 03:18:04,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161066217] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:04,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:04,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:04,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728354455] [2021-06-05 03:18:04,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:04,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:04,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:04,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:04,406 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 03:18:04,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:04,579 INFO L93 Difference]: Finished difference Result 1343 states and 4063 transitions. [2021-06-05 03:18:04,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:04,580 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:04,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:04,581 INFO L225 Difference]: With dead ends: 1343 [2021-06-05 03:18:04,582 INFO L226 Difference]: Without dead ends: 1209 [2021-06-05 03:18:04,582 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 03:18:04,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2021-06-05 03:18:04,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1153. [2021-06-05 03:18:04,596 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 03:18:04,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 3557 transitions. [2021-06-05 03:18:04,598 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 3557 transitions. Word has length 26 [2021-06-05 03:18:04,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:04,598 INFO L482 AbstractCegarLoop]: Abstraction has 1153 states and 3557 transitions. [2021-06-05 03:18:04,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:04,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 3557 transitions. [2021-06-05 03:18:04,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:04,600 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:04,600 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 03:18:04,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 03:18:04,600 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:04,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:04,600 INFO L82 PathProgramCache]: Analyzing trace with hash -943449290, now seen corresponding path program 25 times [2021-06-05 03:18:04,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:04,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222238766] [2021-06-05 03:18:04,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:04,674 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 03:18:04,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:04,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222238766] [2021-06-05 03:18:04,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222238766] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:04,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:04,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:04,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548257063] [2021-06-05 03:18:04,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:04,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:04,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:04,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:04,675 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 03:18:04,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:04,837 INFO L93 Difference]: Finished difference Result 1431 states and 4320 transitions. [2021-06-05 03:18:04,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:04,838 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 03:18:04,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:04,839 INFO L225 Difference]: With dead ends: 1431 [2021-06-05 03:18:04,840 INFO L226 Difference]: Without dead ends: 1310 [2021-06-05 03:18:04,840 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:04,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-06-05 03:18:04,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1143. [2021-06-05 03:18:04,860 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 03:18:04,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3527 transitions. [2021-06-05 03:18:04,862 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3527 transitions. Word has length 26 [2021-06-05 03:18:04,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:04,862 INFO L482 AbstractCegarLoop]: Abstraction has 1143 states and 3527 transitions. [2021-06-05 03:18:04,862 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:04,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3527 transitions. [2021-06-05 03:18:04,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:04,866 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:04,866 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 03:18:04,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 03:18:04,866 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:04,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:04,867 INFO L82 PathProgramCache]: Analyzing trace with hash -952851656, now seen corresponding path program 26 times [2021-06-05 03:18:04,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:04,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300036823] [2021-06-05 03:18:04,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:04,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:04,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300036823] [2021-06-05 03:18:04,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300036823] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:04,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:04,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:04,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096953227] [2021-06-05 03:18:04,926 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:04,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:04,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:04,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:04,926 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 03:18:05,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:05,058 INFO L93 Difference]: Finished difference Result 1389 states and 4203 transitions. [2021-06-05 03:18:05,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:05,059 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 03:18:05,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:05,060 INFO L225 Difference]: With dead ends: 1389 [2021-06-05 03:18:05,060 INFO L226 Difference]: Without dead ends: 1278 [2021-06-05 03:18:05,060 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:05,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-06-05 03:18:05,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1180. [2021-06-05 03:18:05,080 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 03:18:05,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3634 transitions. [2021-06-05 03:18:05,082 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3634 transitions. Word has length 26 [2021-06-05 03:18:05,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:05,082 INFO L482 AbstractCegarLoop]: Abstraction has 1180 states and 3634 transitions. [2021-06-05 03:18:05,082 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 03:18:05,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3634 transitions. [2021-06-05 03:18:05,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:05,083 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:05,083 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:05,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 03:18:05,084 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:05,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:05,084 INFO L82 PathProgramCache]: Analyzing trace with hash -83407048, now seen corresponding path program 27 times [2021-06-05 03:18:05,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:05,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086746813] [2021-06-05 03:18:05,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:05,147 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:05,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086746813] [2021-06-05 03:18:05,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086746813] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:05,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:05,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:05,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781594797] [2021-06-05 03:18:05,147 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:05,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:05,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:05,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:05,148 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 03:18:05,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:05,306 INFO L93 Difference]: Finished difference Result 1506 states and 4529 transitions. [2021-06-05 03:18:05,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:05,306 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:05,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:05,308 INFO L225 Difference]: With dead ends: 1506 [2021-06-05 03:18:05,308 INFO L226 Difference]: Without dead ends: 1281 [2021-06-05 03:18:05,309 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:05,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-06-05 03:18:05,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1143. [2021-06-05 03:18:05,324 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 03:18:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3503 transitions. [2021-06-05 03:18:05,325 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3503 transitions. Word has length 26 [2021-06-05 03:18:05,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:05,326 INFO L482 AbstractCegarLoop]: Abstraction has 1143 states and 3503 transitions. [2021-06-05 03:18:05,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:05,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3503 transitions. [2021-06-05 03:18:05,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:05,327 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:05,327 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:05,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 03:18:05,327 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:05,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:05,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1624374870, now seen corresponding path program 28 times [2021-06-05 03:18:05,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:05,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391411552] [2021-06-05 03:18:05,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:05,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:05,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391411552] [2021-06-05 03:18:05,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391411552] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:05,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:05,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:05,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973788814] [2021-06-05 03:18:05,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:05,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:05,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:05,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:05,397 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 03:18:05,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:05,566 INFO L93 Difference]: Finished difference Result 1303 states and 3927 transitions. [2021-06-05 03:18:05,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:05,567 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:05,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:05,569 INFO L225 Difference]: With dead ends: 1303 [2021-06-05 03:18:05,569 INFO L226 Difference]: Without dead ends: 1192 [2021-06-05 03:18:05,569 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 03:18:05,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2021-06-05 03:18:05,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1154. [2021-06-05 03:18:05,583 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 03:18:05,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 3534 transitions. [2021-06-05 03:18:05,584 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 3534 transitions. Word has length 26 [2021-06-05 03:18:05,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:05,584 INFO L482 AbstractCegarLoop]: Abstraction has 1154 states and 3534 transitions. [2021-06-05 03:18:05,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:05,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 3534 transitions. [2021-06-05 03:18:05,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:05,586 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:05,586 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:05,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 03:18:05,586 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:05,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:05,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1801147818, now seen corresponding path program 29 times [2021-06-05 03:18:05,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:05,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128145449] [2021-06-05 03:18:05,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:05,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:05,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128145449] [2021-06-05 03:18:05,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128145449] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:05,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:05,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:05,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864404071] [2021-06-05 03:18:05,647 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:05,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:05,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:05,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:05,647 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 03:18:05,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:05,845 INFO L93 Difference]: Finished difference Result 1496 states and 4503 transitions. [2021-06-05 03:18:05,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:05,846 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 03:18:05,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:05,848 INFO L225 Difference]: With dead ends: 1496 [2021-06-05 03:18:05,848 INFO L226 Difference]: Without dead ends: 1369 [2021-06-05 03:18:05,848 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:05,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2021-06-05 03:18:05,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1143. [2021-06-05 03:18:05,867 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 03:18:05,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3501 transitions. [2021-06-05 03:18:05,869 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3501 transitions. Word has length 26 [2021-06-05 03:18:05,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:05,869 INFO L482 AbstractCegarLoop]: Abstraction has 1143 states and 3501 transitions. [2021-06-05 03:18:05,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:05,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3501 transitions. [2021-06-05 03:18:05,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:05,871 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:05,871 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:05,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 03:18:05,871 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:05,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:05,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1038261820, now seen corresponding path program 30 times [2021-06-05 03:18:05,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:05,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862847713] [2021-06-05 03:18:05,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:05,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:05,943 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:05,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862847713] [2021-06-05 03:18:05,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862847713] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:05,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:05,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:05,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308053462] [2021-06-05 03:18:05,944 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:05,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:05,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:05,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:05,945 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 03:18:06,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:06,114 INFO L93 Difference]: Finished difference Result 1406 states and 4227 transitions. [2021-06-05 03:18:06,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:06,115 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:06,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:06,116 INFO L225 Difference]: With dead ends: 1406 [2021-06-05 03:18:06,116 INFO L226 Difference]: Without dead ends: 1239 [2021-06-05 03:18:06,117 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 03:18:06,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-06-05 03:18:06,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1113. [2021-06-05 03:18:06,130 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 03:18:06,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 3431 transitions. [2021-06-05 03:18:06,132 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 3431 transitions. Word has length 26 [2021-06-05 03:18:06,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:06,132 INFO L482 AbstractCegarLoop]: Abstraction has 1113 states and 3431 transitions. [2021-06-05 03:18:06,132 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:06,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 3431 transitions. [2021-06-05 03:18:06,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:06,134 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:06,134 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:06,134 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 03:18:06,134 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:06,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:06,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1327824616, now seen corresponding path program 31 times [2021-06-05 03:18:06,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:06,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202905888] [2021-06-05 03:18:06,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:06,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:06,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:06,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202905888] [2021-06-05 03:18:06,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202905888] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:06,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:06,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:18:06,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330873593] [2021-06-05 03:18:06,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:18:06,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:06,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:18:06,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:18:06,176 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 03:18:06,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:06,276 INFO L93 Difference]: Finished difference Result 1453 states and 4359 transitions. [2021-06-05 03:18:06,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:18:06,277 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 03:18:06,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:06,279 INFO L225 Difference]: With dead ends: 1453 [2021-06-05 03:18:06,279 INFO L226 Difference]: Without dead ends: 1292 [2021-06-05 03:18:06,281 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.3ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:18:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-06-05 03:18:06,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1206. [2021-06-05 03:18:06,296 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 03:18:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 3680 transitions. [2021-06-05 03:18:06,298 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 3680 transitions. Word has length 26 [2021-06-05 03:18:06,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:06,299 INFO L482 AbstractCegarLoop]: Abstraction has 1206 states and 3680 transitions. [2021-06-05 03:18:06,299 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 03:18:06,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 3680 transitions. [2021-06-05 03:18:06,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:06,301 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:06,301 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:06,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 03:18:06,301 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:06,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:06,302 INFO L82 PathProgramCache]: Analyzing trace with hash 2107557686, now seen corresponding path program 32 times [2021-06-05 03:18:06,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:06,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886482153] [2021-06-05 03:18:06,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:06,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:06,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:06,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886482153] [2021-06-05 03:18:06,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886482153] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:06,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:06,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:06,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977903864] [2021-06-05 03:18:06,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:06,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:06,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:06,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:06,366 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 03:18:06,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:06,489 INFO L93 Difference]: Finished difference Result 1409 states and 4234 transitions. [2021-06-05 03:18:06,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:06,489 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 03:18:06,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:06,491 INFO L225 Difference]: With dead ends: 1409 [2021-06-05 03:18:06,491 INFO L226 Difference]: Without dead ends: 1286 [2021-06-05 03:18:06,491 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:06,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2021-06-05 03:18:06,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1180. [2021-06-05 03:18:06,505 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 03:18:06,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3612 transitions. [2021-06-05 03:18:06,507 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3612 transitions. Word has length 26 [2021-06-05 03:18:06,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:06,507 INFO L482 AbstractCegarLoop]: Abstraction has 1180 states and 3612 transitions. [2021-06-05 03:18:06,507 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 03:18:06,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3612 transitions. [2021-06-05 03:18:06,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:06,508 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:06,509 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:06,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 03:18:06,509 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:06,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:06,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1205087834, now seen corresponding path program 33 times [2021-06-05 03:18:06,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:06,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039946556] [2021-06-05 03:18:06,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:06,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:06,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:06,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039946556] [2021-06-05 03:18:06,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039946556] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:06,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:06,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:18:06,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67602175] [2021-06-05 03:18:06,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:18:06,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:06,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:18:06,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:18:06,556 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 03:18:06,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:06,650 INFO L93 Difference]: Finished difference Result 1516 states and 4589 transitions. [2021-06-05 03:18:06,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:18:06,651 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 03:18:06,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:06,653 INFO L225 Difference]: With dead ends: 1516 [2021-06-05 03:18:06,653 INFO L226 Difference]: Without dead ends: 1419 [2021-06-05 03:18:06,653 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.3ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:18:06,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-06-05 03:18:06,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1247. [2021-06-05 03:18:06,669 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 03:18:06,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3825 transitions. [2021-06-05 03:18:06,672 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3825 transitions. Word has length 26 [2021-06-05 03:18:06,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:06,672 INFO L482 AbstractCegarLoop]: Abstraction has 1247 states and 3825 transitions. [2021-06-05 03:18:06,672 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 03:18:06,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3825 transitions. [2021-06-05 03:18:06,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:06,674 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:06,674 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:06,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 03:18:06,674 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:06,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:06,674 INFO L82 PathProgramCache]: Analyzing trace with hash 296836698, now seen corresponding path program 34 times [2021-06-05 03:18:06,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:06,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223459964] [2021-06-05 03:18:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:06,724 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 03:18:06,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:06,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223459964] [2021-06-05 03:18:06,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223459964] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:06,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:06,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:06,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489599107] [2021-06-05 03:18:06,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:06,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:06,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:06,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:06,725 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 03:18:06,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:06,872 INFO L93 Difference]: Finished difference Result 1463 states and 4440 transitions. [2021-06-05 03:18:06,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:06,872 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 03:18:06,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:06,874 INFO L225 Difference]: With dead ends: 1463 [2021-06-05 03:18:06,874 INFO L226 Difference]: Without dead ends: 1384 [2021-06-05 03:18:06,874 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:06,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-06-05 03:18:06,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1263. [2021-06-05 03:18:06,889 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 03:18:06,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 3875 transitions. [2021-06-05 03:18:06,891 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 3875 transitions. Word has length 26 [2021-06-05 03:18:06,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:06,891 INFO L482 AbstractCegarLoop]: Abstraction has 1263 states and 3875 transitions. [2021-06-05 03:18:06,891 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 03:18:06,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 3875 transitions. [2021-06-05 03:18:06,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:06,893 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:06,893 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:06,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 03:18:06,893 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:06,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:06,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1166281306, now seen corresponding path program 35 times [2021-06-05 03:18:06,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:06,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078261144] [2021-06-05 03:18:06,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:06,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:06,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:06,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078261144] [2021-06-05 03:18:06,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078261144] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:06,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:06,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:06,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930404352] [2021-06-05 03:18:06,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:06,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:06,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:06,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:06,957 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 03:18:07,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:07,090 INFO L93 Difference]: Finished difference Result 1486 states and 4488 transitions. [2021-06-05 03:18:07,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:07,090 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 03:18:07,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:07,092 INFO L225 Difference]: With dead ends: 1486 [2021-06-05 03:18:07,092 INFO L226 Difference]: Without dead ends: 1382 [2021-06-05 03:18:07,092 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 03:18:07,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-06-05 03:18:07,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1252. [2021-06-05 03:18:07,106 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 03:18:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3838 transitions. [2021-06-05 03:18:07,108 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3838 transitions. Word has length 26 [2021-06-05 03:18:07,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:07,108 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3838 transitions. [2021-06-05 03:18:07,108 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 03:18:07,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3838 transitions. [2021-06-05 03:18:07,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:07,110 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:07,110 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:07,110 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 03:18:07,110 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:07,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:07,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1217412664, now seen corresponding path program 36 times [2021-06-05 03:18:07,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:07,111 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890007767] [2021-06-05 03:18:07,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:07,158 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 03:18:07,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:07,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890007767] [2021-06-05 03:18:07,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890007767] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:07,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:07,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:07,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612136160] [2021-06-05 03:18:07,159 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:07,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:07,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:07,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:07,159 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 03:18:07,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:07,290 INFO L93 Difference]: Finished difference Result 1521 states and 4598 transitions. [2021-06-05 03:18:07,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:07,290 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 03:18:07,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:07,292 INFO L225 Difference]: With dead ends: 1521 [2021-06-05 03:18:07,292 INFO L226 Difference]: Without dead ends: 1427 [2021-06-05 03:18:07,292 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:07,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-06-05 03:18:07,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1240. [2021-06-05 03:18:07,313 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 03:18:07,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 3803 transitions. [2021-06-05 03:18:07,315 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 3803 transitions. Word has length 26 [2021-06-05 03:18:07,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:07,315 INFO L482 AbstractCegarLoop]: Abstraction has 1240 states and 3803 transitions. [2021-06-05 03:18:07,315 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 03:18:07,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 3803 transitions. [2021-06-05 03:18:07,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:07,316 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:07,317 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 03:18:07,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 03:18:07,317 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:07,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:07,317 INFO L82 PathProgramCache]: Analyzing trace with hash 369322260, now seen corresponding path program 37 times [2021-06-05 03:18:07,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:07,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729698648] [2021-06-05 03:18:07,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:07,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:07,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:07,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729698648] [2021-06-05 03:18:07,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729698648] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:07,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:07,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:18:07,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727503172] [2021-06-05 03:18:07,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:18:07,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:07,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:18:07,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:18:07,363 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 03:18:07,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:07,463 INFO L93 Difference]: Finished difference Result 1472 states and 4446 transitions. [2021-06-05 03:18:07,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:18:07,463 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 03:18:07,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:07,465 INFO L225 Difference]: With dead ends: 1472 [2021-06-05 03:18:07,465 INFO L226 Difference]: Without dead ends: 1393 [2021-06-05 03:18:07,465 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.8ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:18:07,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-06-05 03:18:07,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1277. [2021-06-05 03:18:07,480 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 03:18:07,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 3910 transitions. [2021-06-05 03:18:07,481 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 3910 transitions. Word has length 26 [2021-06-05 03:18:07,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:07,482 INFO L482 AbstractCegarLoop]: Abstraction has 1277 states and 3910 transitions. [2021-06-05 03:18:07,482 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 03:18:07,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 3910 transitions. [2021-06-05 03:18:07,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:07,483 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:07,483 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 03:18:07,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-05 03:18:07,484 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:07,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:07,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1238766868, now seen corresponding path program 38 times [2021-06-05 03:18:07,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:07,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309789454] [2021-06-05 03:18:07,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:07,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:07,536 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:07,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309789454] [2021-06-05 03:18:07,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309789454] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:07,536 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:07,536 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:07,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961900214] [2021-06-05 03:18:07,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:07,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:07,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:07,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:07,537 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 03:18:07,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:07,679 INFO L93 Difference]: Finished difference Result 1553 states and 4668 transitions. [2021-06-05 03:18:07,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:07,680 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 03:18:07,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:07,682 INFO L225 Difference]: With dead ends: 1553 [2021-06-05 03:18:07,682 INFO L226 Difference]: Without dead ends: 1354 [2021-06-05 03:18:07,682 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:07,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2021-06-05 03:18:07,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1244. [2021-06-05 03:18:07,695 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 03:18:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3779 transitions. [2021-06-05 03:18:07,697 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3779 transitions. Word has length 26 [2021-06-05 03:18:07,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:07,697 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3779 transitions. [2021-06-05 03:18:07,697 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 03:18:07,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3779 transitions. [2021-06-05 03:18:07,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:07,699 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:07,699 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:07,699 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-05 03:18:07,699 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:07,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:07,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1168096970, now seen corresponding path program 39 times [2021-06-05 03:18:07,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:07,700 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235365083] [2021-06-05 03:18:07,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:07,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:07,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:07,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235365083] [2021-06-05 03:18:07,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235365083] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:07,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:07,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:07,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86297975] [2021-06-05 03:18:07,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:07,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:07,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:07,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:07,763 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 03:18:07,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:07,895 INFO L93 Difference]: Finished difference Result 1430 states and 4297 transitions. [2021-06-05 03:18:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:07,895 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 03:18:07,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:07,897 INFO L225 Difference]: With dead ends: 1430 [2021-06-05 03:18:07,897 INFO L226 Difference]: Without dead ends: 1351 [2021-06-05 03:18:07,897 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:07,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-06-05 03:18:07,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1255. [2021-06-05 03:18:07,916 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 03:18:07,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 3810 transitions. [2021-06-05 03:18:07,917 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 3810 transitions. Word has length 26 [2021-06-05 03:18:07,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:07,918 INFO L482 AbstractCegarLoop]: Abstraction has 1255 states and 3810 transitions. [2021-06-05 03:18:07,918 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 03:18:07,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 3810 transitions. [2021-06-05 03:18:07,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:07,919 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:07,919 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:07,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-05 03:18:07,919 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:07,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:07,920 INFO L82 PathProgramCache]: Analyzing trace with hash -298652362, now seen corresponding path program 40 times [2021-06-05 03:18:07,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:07,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241675000] [2021-06-05 03:18:07,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:07,979 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 03:18:07,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:07,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241675000] [2021-06-05 03:18:07,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241675000] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:07,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:07,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:07,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649310827] [2021-06-05 03:18:07,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:07,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:07,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:07,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:07,980 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 03:18:08,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:08,149 INFO L93 Difference]: Finished difference Result 1537 states and 4623 transitions. [2021-06-05 03:18:08,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:08,149 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 03:18:08,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:08,151 INFO L225 Difference]: With dead ends: 1537 [2021-06-05 03:18:08,151 INFO L226 Difference]: Without dead ends: 1442 [2021-06-05 03:18:08,152 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 03:18:08,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2021-06-05 03:18:08,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1244. [2021-06-05 03:18:08,165 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 03:18:08,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3776 transitions. [2021-06-05 03:18:08,167 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3776 transitions. Word has length 26 [2021-06-05 03:18:08,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:08,167 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3776 transitions. [2021-06-05 03:18:08,167 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 03:18:08,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3776 transitions. [2021-06-05 03:18:08,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:08,169 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:08,169 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:08,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-05 03:18:08,169 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:08,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:08,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1872416688, now seen corresponding path program 41 times [2021-06-05 03:18:08,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:08,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383175750] [2021-06-05 03:18:08,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:08,234 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 03:18:08,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:08,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383175750] [2021-06-05 03:18:08,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383175750] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:08,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:08,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:08,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672979452] [2021-06-05 03:18:08,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:08,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:08,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:08,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:08,235 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 03:18:08,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:08,371 INFO L93 Difference]: Finished difference Result 1525 states and 4571 transitions. [2021-06-05 03:18:08,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:08,372 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 03:18:08,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:08,374 INFO L225 Difference]: With dead ends: 1525 [2021-06-05 03:18:08,374 INFO L226 Difference]: Without dead ends: 1377 [2021-06-05 03:18:08,374 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 03:18:08,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2021-06-05 03:18:08,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1245. [2021-06-05 03:18:08,388 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 03:18:08,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3786 transitions. [2021-06-05 03:18:08,390 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3786 transitions. Word has length 26 [2021-06-05 03:18:08,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:08,390 INFO L482 AbstractCegarLoop]: Abstraction has 1245 states and 3786 transitions. [2021-06-05 03:18:08,390 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 03:18:08,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3786 transitions. [2021-06-05 03:18:08,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:08,391 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:08,392 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:08,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-05 03:18:08,392 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:08,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:08,392 INFO L82 PathProgramCache]: Analyzing trace with hash 733362486, now seen corresponding path program 42 times [2021-06-05 03:18:08,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:08,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14043524] [2021-06-05 03:18:08,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:08,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:08,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14043524] [2021-06-05 03:18:08,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14043524] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:08,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:08,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:08,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842610818] [2021-06-05 03:18:08,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:08,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:08,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:08,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:08,456 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 03:18:08,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:08,587 INFO L93 Difference]: Finished difference Result 1531 states and 4573 transitions. [2021-06-05 03:18:08,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:08,588 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 03:18:08,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:08,589 INFO L225 Difference]: With dead ends: 1531 [2021-06-05 03:18:08,590 INFO L226 Difference]: Without dead ends: 1401 [2021-06-05 03:18:08,590 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 03:18:08,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2021-06-05 03:18:08,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1297. [2021-06-05 03:18:08,604 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 03:18:08,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 3926 transitions. [2021-06-05 03:18:08,606 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 3926 transitions. Word has length 26 [2021-06-05 03:18:08,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:08,606 INFO L482 AbstractCegarLoop]: Abstraction has 1297 states and 3926 transitions. [2021-06-05 03:18:08,606 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 03:18:08,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 3926 transitions. [2021-06-05 03:18:08,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:08,608 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:08,608 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:08,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-05 03:18:08,608 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:08,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:08,608 INFO L82 PathProgramCache]: Analyzing trace with hash -126222508, now seen corresponding path program 43 times [2021-06-05 03:18:08,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:08,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361276758] [2021-06-05 03:18:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:08,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:08,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:08,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361276758] [2021-06-05 03:18:08,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361276758] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:08,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:08,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:08,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048190968] [2021-06-05 03:18:08,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:08,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:08,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:08,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:08,667 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 03:18:08,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:08,845 INFO L93 Difference]: Finished difference Result 1518 states and 4526 transitions. [2021-06-05 03:18:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:08,845 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:08,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:08,847 INFO L225 Difference]: With dead ends: 1518 [2021-06-05 03:18:08,847 INFO L226 Difference]: Without dead ends: 1395 [2021-06-05 03:18:08,847 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:08,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2021-06-05 03:18:08,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1271. [2021-06-05 03:18:08,861 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 03:18:08,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 3860 transitions. [2021-06-05 03:18:08,863 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 3860 transitions. Word has length 26 [2021-06-05 03:18:08,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:08,863 INFO L482 AbstractCegarLoop]: Abstraction has 1271 states and 3860 transitions. [2021-06-05 03:18:08,863 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 03:18:08,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 3860 transitions. [2021-06-05 03:18:08,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:08,865 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:08,865 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:08,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-05 03:18:08,865 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:08,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:08,865 INFO L82 PathProgramCache]: Analyzing trace with hash 363756408, now seen corresponding path program 44 times [2021-06-05 03:18:08,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:08,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679925519] [2021-06-05 03:18:08,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:08,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:08,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679925519] [2021-06-05 03:18:08,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679925519] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:08,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:08,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:08,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125340722] [2021-06-05 03:18:08,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:08,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:08,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:08,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:08,913 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 03:18:09,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:09,046 INFO L93 Difference]: Finished difference Result 1636 states and 4901 transitions. [2021-06-05 03:18:09,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:09,046 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 03:18:09,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:09,048 INFO L225 Difference]: With dead ends: 1636 [2021-06-05 03:18:09,048 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 03:18:09,048 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:09,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 03:18:09,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1331. [2021-06-05 03:18:09,062 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 03:18:09,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 4038 transitions. [2021-06-05 03:18:09,064 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 4038 transitions. Word has length 26 [2021-06-05 03:18:09,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:09,064 INFO L482 AbstractCegarLoop]: Abstraction has 1331 states and 4038 transitions. [2021-06-05 03:18:09,064 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 03:18:09,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 4038 transitions. [2021-06-05 03:18:09,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:09,066 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:09,066 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:09,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-05 03:18:09,066 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:09,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:09,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1287799378, now seen corresponding path program 45 times [2021-06-05 03:18:09,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:09,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646483148] [2021-06-05 03:18:09,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:09,134 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 03:18:09,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:09,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646483148] [2021-06-05 03:18:09,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646483148] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:09,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:09,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:09,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255508689] [2021-06-05 03:18:09,135 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:09,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:09,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:09,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:09,135 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 03:18:09,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:09,299 INFO L93 Difference]: Finished difference Result 1514 states and 4527 transitions. [2021-06-05 03:18:09,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:09,299 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:09,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:09,301 INFO L225 Difference]: With dead ends: 1514 [2021-06-05 03:18:09,301 INFO L226 Difference]: Without dead ends: 1403 [2021-06-05 03:18:09,302 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:09,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2021-06-05 03:18:09,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1295. [2021-06-05 03:18:09,315 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 03:18:09,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 3921 transitions. [2021-06-05 03:18:09,317 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 3921 transitions. Word has length 26 [2021-06-05 03:18:09,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:09,317 INFO L482 AbstractCegarLoop]: Abstraction has 1295 states and 3921 transitions. [2021-06-05 03:18:09,317 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:09,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 3921 transitions. [2021-06-05 03:18:09,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:09,319 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:09,319 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:09,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-05 03:18:09,319 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:09,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:09,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1248494412, now seen corresponding path program 46 times [2021-06-05 03:18:09,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:09,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627955944] [2021-06-05 03:18:09,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:09,393 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 03:18:09,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:09,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627955944] [2021-06-05 03:18:09,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627955944] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:09,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:09,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:09,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330457732] [2021-06-05 03:18:09,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:09,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:09,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:09,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:09,394 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 03:18:09,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:09,577 INFO L93 Difference]: Finished difference Result 1453 states and 4342 transitions. [2021-06-05 03:18:09,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:09,578 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:09,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:09,580 INFO L225 Difference]: With dead ends: 1453 [2021-06-05 03:18:09,580 INFO L226 Difference]: Without dead ends: 1374 [2021-06-05 03:18:09,580 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:09,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2021-06-05 03:18:09,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1319. [2021-06-05 03:18:09,594 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 03:18:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 3994 transitions. [2021-06-05 03:18:09,595 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 3994 transitions. Word has length 26 [2021-06-05 03:18:09,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:09,596 INFO L482 AbstractCegarLoop]: Abstraction has 1319 states and 3994 transitions. [2021-06-05 03:18:09,596 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:09,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 3994 transitions. [2021-06-05 03:18:09,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:09,597 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:09,597 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:09,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-05 03:18:09,597 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:09,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:09,598 INFO L82 PathProgramCache]: Analyzing trace with hash -379049804, now seen corresponding path program 47 times [2021-06-05 03:18:09,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:09,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093530028] [2021-06-05 03:18:09,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:09,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:09,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:09,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093530028] [2021-06-05 03:18:09,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093530028] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:09,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:09,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:09,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679976063] [2021-06-05 03:18:09,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:09,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:09,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:09,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:09,656 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 03:18:09,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:09,815 INFO L93 Difference]: Finished difference Result 1550 states and 4630 transitions. [2021-06-05 03:18:09,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:09,815 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:09,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:09,817 INFO L225 Difference]: With dead ends: 1550 [2021-06-05 03:18:09,817 INFO L226 Difference]: Without dead ends: 1455 [2021-06-05 03:18:09,818 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:09,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-06-05 03:18:09,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1323. [2021-06-05 03:18:09,835 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 03:18:09,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 4007 transitions. [2021-06-05 03:18:09,837 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 4007 transitions. Word has length 26 [2021-06-05 03:18:09,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:09,837 INFO L482 AbstractCegarLoop]: Abstraction has 1323 states and 4007 transitions. [2021-06-05 03:18:09,837 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:09,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 4007 transitions. [2021-06-05 03:18:09,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:09,839 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:09,839 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:09,839 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-05 03:18:09,839 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:09,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:09,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1847761034, now seen corresponding path program 48 times [2021-06-05 03:18:09,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:09,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535987440] [2021-06-05 03:18:09,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:09,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:09,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:09,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535987440] [2021-06-05 03:18:09,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535987440] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:09,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:09,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:09,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700246662] [2021-06-05 03:18:09,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:09,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:09,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:09,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:09,897 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 03:18:10,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:10,076 INFO L93 Difference]: Finished difference Result 1551 states and 4630 transitions. [2021-06-05 03:18:10,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:10,077 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 03:18:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:10,079 INFO L225 Difference]: With dead ends: 1551 [2021-06-05 03:18:10,079 INFO L226 Difference]: Without dead ends: 1472 [2021-06-05 03:18:10,079 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:10,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-06-05 03:18:10,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1327. [2021-06-05 03:18:10,098 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 03:18:10,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 4015 transitions. [2021-06-05 03:18:10,100 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 4015 transitions. Word has length 26 [2021-06-05 03:18:10,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:10,100 INFO L482 AbstractCegarLoop]: Abstraction has 1327 states and 4015 transitions. [2021-06-05 03:18:10,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:10,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 4015 transitions. [2021-06-05 03:18:10,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:10,101 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:10,101 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:10,101 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-05 03:18:10,101 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:10,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:10,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1873808986, now seen corresponding path program 49 times [2021-06-05 03:18:10,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:10,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661880188] [2021-06-05 03:18:10,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:10,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:10,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:10,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661880188] [2021-06-05 03:18:10,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661880188] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:10,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:10,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:10,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465427105] [2021-06-05 03:18:10,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:10,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:10,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:10,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:10,168 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 03:18:10,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:10,353 INFO L93 Difference]: Finished difference Result 1593 states and 4759 transitions. [2021-06-05 03:18:10,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:10,354 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 03:18:10,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:10,356 INFO L225 Difference]: With dead ends: 1593 [2021-06-05 03:18:10,356 INFO L226 Difference]: Without dead ends: 1491 [2021-06-05 03:18:10,356 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:10,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-06-05 03:18:10,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1313. [2021-06-05 03:18:10,370 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 03:18:10,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 3985 transitions. [2021-06-05 03:18:10,371 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 3985 transitions. Word has length 26 [2021-06-05 03:18:10,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:10,371 INFO L482 AbstractCegarLoop]: Abstraction has 1313 states and 3985 transitions. [2021-06-05 03:18:10,372 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:10,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 3985 transitions. [2021-06-05 03:18:10,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:10,373 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:10,373 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 03:18:10,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-05 03:18:10,373 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:10,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:10,373 INFO L82 PathProgramCache]: Analyzing trace with hash -440597224, now seen corresponding path program 50 times [2021-06-05 03:18:10,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:10,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903989062] [2021-06-05 03:18:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:10,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:10,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:10,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903989062] [2021-06-05 03:18:10,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903989062] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:10,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:10,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:10,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24547526] [2021-06-05 03:18:10,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:10,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:10,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:10,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:10,434 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 03:18:10,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:10,564 INFO L93 Difference]: Finished difference Result 1603 states and 4787 transitions. [2021-06-05 03:18:10,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:10,565 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 03:18:10,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:10,566 INFO L225 Difference]: With dead ends: 1603 [2021-06-05 03:18:10,567 INFO L226 Difference]: Without dead ends: 1453 [2021-06-05 03:18:10,567 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:10,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-05 03:18:10,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1339. [2021-06-05 03:18:10,580 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 03:18:10,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 4059 transitions. [2021-06-05 03:18:10,582 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 4059 transitions. Word has length 26 [2021-06-05 03:18:10,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:10,582 INFO L482 AbstractCegarLoop]: Abstraction has 1339 states and 4059 transitions. [2021-06-05 03:18:10,582 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 03:18:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 4059 transitions. [2021-06-05 03:18:10,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:10,584 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:10,584 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:10,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-05 03:18:10,584 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:10,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:10,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1300182218, now seen corresponding path program 51 times [2021-06-05 03:18:10,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:10,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949303098] [2021-06-05 03:18:10,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:10,661 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 03:18:10,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:10,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949303098] [2021-06-05 03:18:10,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949303098] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:10,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:10,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:10,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595608523] [2021-06-05 03:18:10,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:10,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:10,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:10,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:10,662 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 03:18:10,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:10,842 INFO L93 Difference]: Finished difference Result 1564 states and 4681 transitions. [2021-06-05 03:18:10,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:10,842 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:10,844 INFO L225 Difference]: With dead ends: 1564 [2021-06-05 03:18:10,844 INFO L226 Difference]: Without dead ends: 1432 [2021-06-05 03:18:10,844 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 03:18:10,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2021-06-05 03:18:10,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1313. [2021-06-05 03:18:10,864 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 03:18:10,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 3991 transitions. [2021-06-05 03:18:10,866 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 3991 transitions. Word has length 26 [2021-06-05 03:18:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:10,866 INFO L482 AbstractCegarLoop]: Abstraction has 1313 states and 3991 transitions. [2021-06-05 03:18:10,866 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:10,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 3991 transitions. [2021-06-05 03:18:10,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:10,867 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:10,867 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:10,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-05 03:18:10,867 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:10,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:10,868 INFO L82 PathProgramCache]: Analyzing trace with hash -658405768, now seen corresponding path program 52 times [2021-06-05 03:18:10,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:10,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238883260] [2021-06-05 03:18:10,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:10,916 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 03:18:10,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:10,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238883260] [2021-06-05 03:18:10,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238883260] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:10,916 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:10,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:10,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219428981] [2021-06-05 03:18:10,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:10,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:10,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:10,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:10,917 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 03:18:11,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:11,046 INFO L93 Difference]: Finished difference Result 1533 states and 4603 transitions. [2021-06-05 03:18:11,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:11,046 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 03:18:11,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:11,048 INFO L225 Difference]: With dead ends: 1533 [2021-06-05 03:18:11,048 INFO L226 Difference]: Without dead ends: 1436 [2021-06-05 03:18:11,048 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:11,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-06-05 03:18:11,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1330. [2021-06-05 03:18:11,062 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 03:18:11,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 4042 transitions. [2021-06-05 03:18:11,064 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 4042 transitions. Word has length 26 [2021-06-05 03:18:11,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:11,064 INFO L482 AbstractCegarLoop]: Abstraction has 1330 states and 4042 transitions. [2021-06-05 03:18:11,064 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 03:18:11,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 4042 transitions. [2021-06-05 03:18:11,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:11,065 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:11,065 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 03:18:11,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-05 03:18:11,066 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:11,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:11,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1566656904, now seen corresponding path program 53 times [2021-06-05 03:18:11,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:11,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591339190] [2021-06-05 03:18:11,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:11,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:11,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:11,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591339190] [2021-06-05 03:18:11,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591339190] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:11,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:11,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:11,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758797870] [2021-06-05 03:18:11,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:11,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:11,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:11,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:11,131 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 03:18:11,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:11,290 INFO L93 Difference]: Finished difference Result 1540 states and 4628 transitions. [2021-06-05 03:18:11,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:11,291 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:11,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:11,293 INFO L225 Difference]: With dead ends: 1540 [2021-06-05 03:18:11,293 INFO L226 Difference]: Without dead ends: 1461 [2021-06-05 03:18:11,293 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:11,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-06-05 03:18:11,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1342. [2021-06-05 03:18:11,306 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 03:18:11,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 4076 transitions. [2021-06-05 03:18:11,308 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 4076 transitions. Word has length 26 [2021-06-05 03:18:11,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:11,308 INFO L482 AbstractCegarLoop]: Abstraction has 1342 states and 4076 transitions. [2021-06-05 03:18:11,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:11,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 4076 transitions. [2021-06-05 03:18:11,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:11,310 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:11,310 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 03:18:11,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-05 03:18:11,310 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:11,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:11,310 INFO L82 PathProgramCache]: Analyzing trace with hash -697212296, now seen corresponding path program 54 times [2021-06-05 03:18:11,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:11,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903424882] [2021-06-05 03:18:11,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:11,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:11,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:11,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903424882] [2021-06-05 03:18:11,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903424882] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:11,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:11,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:11,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364532846] [2021-06-05 03:18:11,378 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:11,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:11,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:11,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:11,378 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 03:18:11,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:11,550 INFO L93 Difference]: Finished difference Result 1587 states and 4770 transitions. [2021-06-05 03:18:11,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:11,550 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:11,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:11,552 INFO L225 Difference]: With dead ends: 1587 [2021-06-05 03:18:11,552 INFO L226 Difference]: Without dead ends: 1474 [2021-06-05 03:18:11,552 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 03:18:11,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-06-05 03:18:11,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1340. [2021-06-05 03:18:11,566 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 03:18:11,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 4071 transitions. [2021-06-05 03:18:11,568 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 4071 transitions. Word has length 26 [2021-06-05 03:18:11,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:11,568 INFO L482 AbstractCegarLoop]: Abstraction has 1340 states and 4071 transitions. [2021-06-05 03:18:11,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:11,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 4071 transitions. [2021-06-05 03:18:11,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:11,570 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:11,570 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:11,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-05 03:18:11,570 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:11,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:11,570 INFO L82 PathProgramCache]: Analyzing trace with hash -646080938, now seen corresponding path program 55 times [2021-06-05 03:18:11,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:11,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770593492] [2021-06-05 03:18:11,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:11,639 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 03:18:11,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:11,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770593492] [2021-06-05 03:18:11,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770593492] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:11,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:11,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:11,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687294708] [2021-06-05 03:18:11,639 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:11,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:11,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:11,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:11,640 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 03:18:11,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:11,815 INFO L93 Difference]: Finished difference Result 1550 states and 4655 transitions. [2021-06-05 03:18:11,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:11,815 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:11,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:11,817 INFO L225 Difference]: With dead ends: 1550 [2021-06-05 03:18:11,817 INFO L226 Difference]: Without dead ends: 1456 [2021-06-05 03:18:11,817 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:11,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2021-06-05 03:18:11,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1323. [2021-06-05 03:18:11,830 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 03:18:11,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 4022 transitions. [2021-06-05 03:18:11,832 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 4022 transitions. Word has length 26 [2021-06-05 03:18:11,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:11,832 INFO L482 AbstractCegarLoop]: Abstraction has 1323 states and 4022 transitions. [2021-06-05 03:18:11,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:11,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 4022 transitions. [2021-06-05 03:18:11,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:11,834 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:11,834 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 03:18:11,834 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-05 03:18:11,834 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:11,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:11,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1155018158, now seen corresponding path program 56 times [2021-06-05 03:18:11,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:11,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449388248] [2021-06-05 03:18:11,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:11,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:11,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:11,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449388248] [2021-06-05 03:18:11,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449388248] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:11,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:11,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:11,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995374776] [2021-06-05 03:18:11,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:11,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:11,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:11,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:11,898 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 03:18:12,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:12,033 INFO L93 Difference]: Finished difference Result 1614 states and 4865 transitions. [2021-06-05 03:18:12,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:12,033 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 03:18:12,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:12,035 INFO L225 Difference]: With dead ends: 1614 [2021-06-05 03:18:12,035 INFO L226 Difference]: Without dead ends: 1535 [2021-06-05 03:18:12,036 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:12,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-06-05 03:18:12,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1344. [2021-06-05 03:18:12,050 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 03:18:12,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 4084 transitions. [2021-06-05 03:18:12,052 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 4084 transitions. Word has length 26 [2021-06-05 03:18:12,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:12,052 INFO L482 AbstractCegarLoop]: Abstraction has 1344 states and 4084 transitions. [2021-06-05 03:18:12,053 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 03:18:12,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 4084 transitions. [2021-06-05 03:18:12,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:12,054 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:12,054 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 03:18:12,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-05 03:18:12,054 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:12,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:12,054 INFO L82 PathProgramCache]: Analyzing trace with hash 67669594, now seen corresponding path program 57 times [2021-06-05 03:18:12,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:12,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840242024] [2021-06-05 03:18:12,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:12,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:12,113 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:12,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840242024] [2021-06-05 03:18:12,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840242024] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:12,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:12,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:12,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599809182] [2021-06-05 03:18:12,113 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:12,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:12,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:12,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:12,113 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 03:18:12,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:12,251 INFO L93 Difference]: Finished difference Result 1680 states and 5059 transitions. [2021-06-05 03:18:12,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:12,252 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 03:18:12,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:12,254 INFO L225 Difference]: With dead ends: 1680 [2021-06-05 03:18:12,254 INFO L226 Difference]: Without dead ends: 1585 [2021-06-05 03:18:12,254 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:12,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-06-05 03:18:12,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1362. [2021-06-05 03:18:12,268 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 03:18:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 4144 transitions. [2021-06-05 03:18:12,270 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 4144 transitions. Word has length 26 [2021-06-05 03:18:12,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:12,270 INFO L482 AbstractCegarLoop]: Abstraction has 1362 states and 4144 transitions. [2021-06-05 03:18:12,270 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 03:18:12,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 4144 transitions. [2021-06-05 03:18:12,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:12,272 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:12,272 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:12,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-05 03:18:12,272 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:12,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:12,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1571020596, now seen corresponding path program 58 times [2021-06-05 03:18:12,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:12,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482281854] [2021-06-05 03:18:12,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:12,332 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 03:18:12,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:12,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482281854] [2021-06-05 03:18:12,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482281854] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:12,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:12,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:12,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221058628] [2021-06-05 03:18:12,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:12,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:12,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:12,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:12,333 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 03:18:12,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:12,464 INFO L93 Difference]: Finished difference Result 1581 states and 4769 transitions. [2021-06-05 03:18:12,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:12,465 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 03:18:12,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:12,467 INFO L225 Difference]: With dead ends: 1581 [2021-06-05 03:18:12,467 INFO L226 Difference]: Without dead ends: 1490 [2021-06-05 03:18:12,467 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:12,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2021-06-05 03:18:12,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1345. [2021-06-05 03:18:12,486 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 03:18:12,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 4092 transitions. [2021-06-05 03:18:12,488 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 4092 transitions. Word has length 26 [2021-06-05 03:18:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:12,488 INFO L482 AbstractCegarLoop]: Abstraction has 1345 states and 4092 transitions. [2021-06-05 03:18:12,488 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 03:18:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 4092 transitions. [2021-06-05 03:18:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:12,489 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:12,489 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 03:18:12,489 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-05 03:18:12,489 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:12,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:12,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1824705716, now seen corresponding path program 59 times [2021-06-05 03:18:12,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:12,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576484295] [2021-06-05 03:18:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:12,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:12,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:12,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576484295] [2021-06-05 03:18:12,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576484295] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:12,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:12,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:12,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914699225] [2021-06-05 03:18:12,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:12,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:12,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:12,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:12,562 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 03:18:12,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:12,734 INFO L93 Difference]: Finished difference Result 1471 states and 4427 transitions. [2021-06-05 03:18:12,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:12,734 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:12,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:12,736 INFO L225 Difference]: With dead ends: 1471 [2021-06-05 03:18:12,736 INFO L226 Difference]: Without dead ends: 1392 [2021-06-05 03:18:12,736 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 03:18:12,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-06-05 03:18:12,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1357. [2021-06-05 03:18:12,751 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 03:18:12,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 4126 transitions. [2021-06-05 03:18:12,753 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 4126 transitions. Word has length 26 [2021-06-05 03:18:12,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:12,753 INFO L482 AbstractCegarLoop]: Abstraction has 1357 states and 4126 transitions. [2021-06-05 03:18:12,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:12,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 4126 transitions. [2021-06-05 03:18:12,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:12,755 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:12,755 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 03:18:12,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-05 03:18:12,755 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:12,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:12,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1600816972, now seen corresponding path program 60 times [2021-06-05 03:18:12,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:12,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91314073] [2021-06-05 03:18:12,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:12,826 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 03:18:12,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:12,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91314073] [2021-06-05 03:18:12,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91314073] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:12,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:12,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:12,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37249348] [2021-06-05 03:18:12,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:12,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:12,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:12,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:12,827 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 03:18:13,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:13,004 INFO L93 Difference]: Finished difference Result 1521 states and 4567 transitions. [2021-06-05 03:18:13,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:13,004 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:13,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:13,006 INFO L225 Difference]: With dead ends: 1521 [2021-06-05 03:18:13,006 INFO L226 Difference]: Without dead ends: 1426 [2021-06-05 03:18:13,006 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 03:18:13,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2021-06-05 03:18:13,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1365. [2021-06-05 03:18:13,019 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 03:18:13,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 4154 transitions. [2021-06-05 03:18:13,021 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 4154 transitions. Word has length 26 [2021-06-05 03:18:13,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:13,021 INFO L482 AbstractCegarLoop]: Abstraction has 1365 states and 4154 transitions. [2021-06-05 03:18:13,021 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 03:18:13,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 4154 transitions. [2021-06-05 03:18:13,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:13,023 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:13,023 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 03:18:13,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-05 03:18:13,023 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:13,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:13,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1225439094, now seen corresponding path program 61 times [2021-06-05 03:18:13,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:13,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119013188] [2021-06-05 03:18:13,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:13,087 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 03:18:13,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:13,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119013188] [2021-06-05 03:18:13,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119013188] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:13,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:13,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:13,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967238113] [2021-06-05 03:18:13,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:13,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:13,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:13,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:13,088 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 03:18:13,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:13,266 INFO L93 Difference]: Finished difference Result 1567 states and 4715 transitions. [2021-06-05 03:18:13,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:13,266 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 03:18:13,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:13,268 INFO L225 Difference]: With dead ends: 1567 [2021-06-05 03:18:13,268 INFO L226 Difference]: Without dead ends: 1488 [2021-06-05 03:18:13,269 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:13,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2021-06-05 03:18:13,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1372. [2021-06-05 03:18:13,283 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 03:18:13,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 4173 transitions. [2021-06-05 03:18:13,285 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 4173 transitions. Word has length 26 [2021-06-05 03:18:13,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:13,285 INFO L482 AbstractCegarLoop]: Abstraction has 1372 states and 4173 transitions. [2021-06-05 03:18:13,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:13,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 4173 transitions. [2021-06-05 03:18:13,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:13,287 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:13,287 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:13,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-05 03:18:13,287 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:13,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:13,287 INFO L82 PathProgramCache]: Analyzing trace with hash 652041818, now seen corresponding path program 62 times [2021-06-05 03:18:13,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:13,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163932776] [2021-06-05 03:18:13,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:13,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:13,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163932776] [2021-06-05 03:18:13,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163932776] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:13,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:13,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:13,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485078741] [2021-06-05 03:18:13,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:13,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:13,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:13,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:13,366 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 03:18:13,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:13,538 INFO L93 Difference]: Finished difference Result 1591 states and 4779 transitions. [2021-06-05 03:18:13,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:13,538 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:13,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:13,540 INFO L225 Difference]: With dead ends: 1591 [2021-06-05 03:18:13,541 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 03:18:13,541 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 03:18:13,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 03:18:13,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1377. [2021-06-05 03:18:13,554 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 03:18:13,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 4190 transitions. [2021-06-05 03:18:13,556 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 4190 transitions. Word has length 26 [2021-06-05 03:18:13,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:13,557 INFO L482 AbstractCegarLoop]: Abstraction has 1377 states and 4190 transitions. [2021-06-05 03:18:13,557 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 03:18:13,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 4190 transitions. [2021-06-05 03:18:13,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:13,558 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:13,558 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 03:18:13,558 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-05 03:18:13,558 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:13,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:13,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1238592666, now seen corresponding path program 63 times [2021-06-05 03:18:13,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:13,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813533052] [2021-06-05 03:18:13,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:13,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:13,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:13,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813533052] [2021-06-05 03:18:13,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813533052] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:13,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:13,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:13,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849587763] [2021-06-05 03:18:13,621 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:13,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:13,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:13,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:13,621 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 03:18:13,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:13,788 INFO L93 Difference]: Finished difference Result 1579 states and 4742 transitions. [2021-06-05 03:18:13,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:13,789 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:13,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:13,791 INFO L225 Difference]: With dead ends: 1579 [2021-06-05 03:18:13,791 INFO L226 Difference]: Without dead ends: 1491 [2021-06-05 03:18:13,791 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 03:18:13,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-06-05 03:18:13,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1383. [2021-06-05 03:18:13,805 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 03:18:13,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 4209 transitions. [2021-06-05 03:18:13,807 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 4209 transitions. Word has length 26 [2021-06-05 03:18:13,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:13,807 INFO L482 AbstractCegarLoop]: Abstraction has 1383 states and 4209 transitions. [2021-06-05 03:18:13,807 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 03:18:13,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 4209 transitions. [2021-06-05 03:18:13,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:13,809 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:13,809 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 03:18:13,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-05 03:18:13,809 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:13,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:13,809 INFO L82 PathProgramCache]: Analyzing trace with hash 526524824, now seen corresponding path program 64 times [2021-06-05 03:18:13,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:13,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323217785] [2021-06-05 03:18:13,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:13,881 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 03:18:13,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:13,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323217785] [2021-06-05 03:18:13,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323217785] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:13,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:13,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:13,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112303062] [2021-06-05 03:18:13,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:13,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:13,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:13,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:13,882 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 03:18:14,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:14,067 INFO L93 Difference]: Finished difference Result 1558 states and 4681 transitions. [2021-06-05 03:18:14,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:14,067 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:14,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:14,069 INFO L225 Difference]: With dead ends: 1558 [2021-06-05 03:18:14,069 INFO L226 Difference]: Without dead ends: 1464 [2021-06-05 03:18:14,070 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 03:18:14,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-06-05 03:18:14,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1385. [2021-06-05 03:18:14,083 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 03:18:14,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 4217 transitions. [2021-06-05 03:18:14,085 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 4217 transitions. Word has length 26 [2021-06-05 03:18:14,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:14,085 INFO L482 AbstractCegarLoop]: Abstraction has 1385 states and 4217 transitions. [2021-06-05 03:18:14,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:14,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 4217 transitions. [2021-06-05 03:18:14,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:14,087 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:14,087 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 03:18:14,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-05 03:18:14,087 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:14,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:14,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1617897750, now seen corresponding path program 65 times [2021-06-05 03:18:14,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:14,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269996384] [2021-06-05 03:18:14,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:14,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:14,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269996384] [2021-06-05 03:18:14,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269996384] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:14,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:14,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:14,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448545235] [2021-06-05 03:18:14,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:14,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:14,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:14,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:14,145 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 03:18:14,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:14,305 INFO L93 Difference]: Finished difference Result 1534 states and 4620 transitions. [2021-06-05 03:18:14,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:14,305 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:14,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:14,307 INFO L225 Difference]: With dead ends: 1534 [2021-06-05 03:18:14,307 INFO L226 Difference]: Without dead ends: 1455 [2021-06-05 03:18:14,307 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:14,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-06-05 03:18:14,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1391. [2021-06-05 03:18:14,321 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 03:18:14,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4240 transitions. [2021-06-05 03:18:14,323 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4240 transitions. Word has length 26 [2021-06-05 03:18:14,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:14,323 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 4240 transitions. [2021-06-05 03:18:14,323 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:14,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4240 transitions. [2021-06-05 03:18:14,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:14,325 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:14,325 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:14,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-05 03:18:14,325 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:14,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:14,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1807624938, now seen corresponding path program 66 times [2021-06-05 03:18:14,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:14,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745659093] [2021-06-05 03:18:14,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:14,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:14,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745659093] [2021-06-05 03:18:14,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745659093] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:14,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:14,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:14,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504433600] [2021-06-05 03:18:14,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:14,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:14,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:14,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:14,383 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 03:18:14,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:14,568 INFO L93 Difference]: Finished difference Result 1569 states and 4729 transitions. [2021-06-05 03:18:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:14,568 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:14,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:14,570 INFO L225 Difference]: With dead ends: 1569 [2021-06-05 03:18:14,570 INFO L226 Difference]: Without dead ends: 1474 [2021-06-05 03:18:14,571 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:14,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-06-05 03:18:14,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1400. [2021-06-05 03:18:14,585 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 03:18:14,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 4271 transitions. [2021-06-05 03:18:14,587 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 4271 transitions. Word has length 26 [2021-06-05 03:18:14,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:14,587 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 4271 transitions. [2021-06-05 03:18:14,587 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:14,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 4271 transitions. [2021-06-05 03:18:14,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:14,588 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:14,588 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 03:18:14,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-05 03:18:14,589 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:14,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:14,589 INFO L82 PathProgramCache]: Analyzing trace with hash 113058932, now seen corresponding path program 67 times [2021-06-05 03:18:14,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:14,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091243695] [2021-06-05 03:18:14,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:14,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:14,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091243695] [2021-06-05 03:18:14,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091243695] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:14,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:14,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:14,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263892769] [2021-06-05 03:18:14,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:14,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:14,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:14,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:14,647 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 03:18:14,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:14,808 INFO L93 Difference]: Finished difference Result 1559 states and 4705 transitions. [2021-06-05 03:18:14,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:14,814 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:14,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:14,817 INFO L225 Difference]: With dead ends: 1559 [2021-06-05 03:18:14,817 INFO L226 Difference]: Without dead ends: 1474 [2021-06-05 03:18:14,817 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:14,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-06-05 03:18:14,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1404. [2021-06-05 03:18:14,831 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 03:18:14,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 4280 transitions. [2021-06-05 03:18:14,833 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 4280 transitions. Word has length 26 [2021-06-05 03:18:14,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:14,833 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 4280 transitions. [2021-06-05 03:18:14,833 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:14,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 4280 transitions. [2021-06-05 03:18:14,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:14,834 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:14,834 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 03:18:14,834 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-05 03:18:14,834 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:14,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:14,835 INFO L82 PathProgramCache]: Analyzing trace with hash -2061970672, now seen corresponding path program 68 times [2021-06-05 03:18:14,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:14,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474376958] [2021-06-05 03:18:14,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:14,895 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 03:18:14,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:14,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474376958] [2021-06-05 03:18:14,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474376958] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:14,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:14,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:14,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490310158] [2021-06-05 03:18:14,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:14,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:14,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:14,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:14,896 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 03:18:15,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:15,079 INFO L93 Difference]: Finished difference Result 1599 states and 4818 transitions. [2021-06-05 03:18:15,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:15,080 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:15,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:15,082 INFO L225 Difference]: With dead ends: 1599 [2021-06-05 03:18:15,082 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 03:18:15,082 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:15,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 03:18:15,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1402. [2021-06-05 03:18:15,103 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 03:18:15,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 4280 transitions. [2021-06-05 03:18:15,105 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 4280 transitions. Word has length 26 [2021-06-05 03:18:15,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:15,106 INFO L482 AbstractCegarLoop]: Abstraction has 1402 states and 4280 transitions. [2021-06-05 03:18:15,106 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 03:18:15,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 4280 transitions. [2021-06-05 03:18:15,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:15,107 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:15,107 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 03:18:15,107 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-05 03:18:15,107 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:15,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:15,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1557110056, now seen corresponding path program 69 times [2021-06-05 03:18:15,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:15,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964435189] [2021-06-05 03:18:15,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:15,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:15,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:15,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964435189] [2021-06-05 03:18:15,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964435189] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:15,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:15,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:15,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385049095] [2021-06-05 03:18:15,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:15,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:15,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:15,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:15,164 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 03:18:15,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:15,334 INFO L93 Difference]: Finished difference Result 1713 states and 5194 transitions. [2021-06-05 03:18:15,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:15,334 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:15,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:15,337 INFO L225 Difference]: With dead ends: 1713 [2021-06-05 03:18:15,337 INFO L226 Difference]: Without dead ends: 1634 [2021-06-05 03:18:15,337 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:15,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-06-05 03:18:15,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1411. [2021-06-05 03:18:15,352 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 03:18:15,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 4315 transitions. [2021-06-05 03:18:15,354 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 4315 transitions. Word has length 26 [2021-06-05 03:18:15,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:15,354 INFO L482 AbstractCegarLoop]: Abstraction has 1411 states and 4315 transitions. [2021-06-05 03:18:15,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:15,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 4315 transitions. [2021-06-05 03:18:15,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:15,356 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:15,356 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:15,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-05 03:18:15,356 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:15,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:15,357 INFO L82 PathProgramCache]: Analyzing trace with hash -2130507332, now seen corresponding path program 70 times [2021-06-05 03:18:15,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:15,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413297195] [2021-06-05 03:18:15,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:15,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:15,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:15,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413297195] [2021-06-05 03:18:15,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413297195] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:15,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:15,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:15,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206685782] [2021-06-05 03:18:15,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:15,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:15,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:15,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:15,414 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 03:18:15,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:15,575 INFO L93 Difference]: Finished difference Result 1734 states and 5229 transitions. [2021-06-05 03:18:15,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:15,575 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:15,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:15,578 INFO L225 Difference]: With dead ends: 1734 [2021-06-05 03:18:15,578 INFO L226 Difference]: Without dead ends: 1639 [2021-06-05 03:18:15,578 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:15,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-06-05 03:18:15,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1415. [2021-06-05 03:18:15,592 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 03:18:15,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 4326 transitions. [2021-06-05 03:18:15,594 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 4326 transitions. Word has length 26 [2021-06-05 03:18:15,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:15,594 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 4326 transitions. [2021-06-05 03:18:15,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:15,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 4326 transitions. [2021-06-05 03:18:15,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:15,596 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:15,596 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 03:18:15,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-05 03:18:15,596 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:15,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:15,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1345712694, now seen corresponding path program 71 times [2021-06-05 03:18:15,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:15,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430902975] [2021-06-05 03:18:15,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:15,661 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 03:18:15,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:15,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430902975] [2021-06-05 03:18:15,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430902975] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:15,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:15,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:15,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067165426] [2021-06-05 03:18:15,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:15,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:15,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:15,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:15,662 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 03:18:15,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:15,830 INFO L93 Difference]: Finished difference Result 1641 states and 4975 transitions. [2021-06-05 03:18:15,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:15,830 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 03:18:15,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:15,832 INFO L225 Difference]: With dead ends: 1641 [2021-06-05 03:18:15,832 INFO L226 Difference]: Without dead ends: 1551 [2021-06-05 03:18:15,832 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:15,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2021-06-05 03:18:15,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1409. [2021-06-05 03:18:15,847 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 03:18:15,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 4311 transitions. [2021-06-05 03:18:15,849 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 4311 transitions. Word has length 26 [2021-06-05 03:18:15,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:15,849 INFO L482 AbstractCegarLoop]: Abstraction has 1409 states and 4311 transitions. [2021-06-05 03:18:15,849 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 03:18:15,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 4311 transitions. [2021-06-05 03:18:15,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:15,851 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:15,851 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 03:18:15,851 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-05 03:18:15,851 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:15,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:15,851 INFO L82 PathProgramCache]: Analyzing trace with hash 970699354, now seen corresponding path program 72 times [2021-06-05 03:18:15,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:15,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852732417] [2021-06-05 03:18:15,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:15,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:15,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:15,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852732417] [2021-06-05 03:18:15,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852732417] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:15,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:15,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:15,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570252951] [2021-06-05 03:18:15,902 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:15,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:15,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:15,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:15,902 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 03:18:16,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:16,039 INFO L93 Difference]: Finished difference Result 1735 states and 5254 transitions. [2021-06-05 03:18:16,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:16,039 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 03:18:16,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:16,042 INFO L225 Difference]: With dead ends: 1735 [2021-06-05 03:18:16,042 INFO L226 Difference]: Without dead ends: 1656 [2021-06-05 03:18:16,042 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:16,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2021-06-05 03:18:16,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1445. [2021-06-05 03:18:16,057 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 03:18:16,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 4418 transitions. [2021-06-05 03:18:16,059 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 4418 transitions. Word has length 26 [2021-06-05 03:18:16,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:16,059 INFO L482 AbstractCegarLoop]: Abstraction has 1445 states and 4418 transitions. [2021-06-05 03:18:16,059 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 03:18:16,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 4418 transitions. [2021-06-05 03:18:16,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:16,060 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:16,060 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 03:18:16,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-05 03:18:16,060 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:16,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:16,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1840143962, now seen corresponding path program 73 times [2021-06-05 03:18:16,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:16,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145798022] [2021-06-05 03:18:16,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:16,127 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 03:18:16,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:16,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145798022] [2021-06-05 03:18:16,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145798022] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:16,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:16,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:16,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423062198] [2021-06-05 03:18:16,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:16,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:16,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:16,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:16,128 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 03:18:16,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:16,307 INFO L93 Difference]: Finished difference Result 1792 states and 5392 transitions. [2021-06-05 03:18:16,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:16,307 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:16,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:16,310 INFO L225 Difference]: With dead ends: 1792 [2021-06-05 03:18:16,310 INFO L226 Difference]: Without dead ends: 1611 [2021-06-05 03:18:16,310 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:16,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2021-06-05 03:18:16,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1435. [2021-06-05 03:18:16,325 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 03:18:16,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 4394 transitions. [2021-06-05 03:18:16,327 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 4394 transitions. Word has length 26 [2021-06-05 03:18:16,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:16,327 INFO L482 AbstractCegarLoop]: Abstraction has 1435 states and 4394 transitions. [2021-06-05 03:18:16,327 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 03:18:16,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 4394 transitions. [2021-06-05 03:18:16,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:16,329 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:16,329 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 03:18:16,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-05 03:18:16,329 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:16,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:16,329 INFO L82 PathProgramCache]: Analyzing trace with hash -747041416, now seen corresponding path program 74 times [2021-06-05 03:18:16,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:16,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545383810] [2021-06-05 03:18:16,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:16,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:16,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545383810] [2021-06-05 03:18:16,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545383810] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:16,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:16,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:16,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738333323] [2021-06-05 03:18:16,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:16,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:16,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:16,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:16,421 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 03:18:16,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:16,601 INFO L93 Difference]: Finished difference Result 1663 states and 5025 transitions. [2021-06-05 03:18:16,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:16,601 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:16,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:16,603 INFO L225 Difference]: With dead ends: 1663 [2021-06-05 03:18:16,603 INFO L226 Difference]: Without dead ends: 1584 [2021-06-05 03:18:16,603 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 03:18:16,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-06-05 03:18:16,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1437. [2021-06-05 03:18:16,618 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 03:18:16,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 4401 transitions. [2021-06-05 03:18:16,620 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 4401 transitions. Word has length 26 [2021-06-05 03:18:16,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:16,620 INFO L482 AbstractCegarLoop]: Abstraction has 1437 states and 4401 transitions. [2021-06-05 03:18:16,620 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 03:18:16,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 4401 transitions. [2021-06-05 03:18:16,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:16,622 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:16,622 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:16,622 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-05 03:18:16,622 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:16,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:16,622 INFO L82 PathProgramCache]: Analyzing trace with hash 122403192, now seen corresponding path program 75 times [2021-06-05 03:18:16,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:16,622 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885325546] [2021-06-05 03:18:16,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:16,683 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 03:18:16,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:16,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885325546] [2021-06-05 03:18:16,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885325546] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:16,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:16,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:16,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448109485] [2021-06-05 03:18:16,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:16,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:16,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:16,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:16,684 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 03:18:16,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:16,855 INFO L93 Difference]: Finished difference Result 1626 states and 4884 transitions. [2021-06-05 03:18:16,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:16,856 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:16,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:16,858 INFO L225 Difference]: With dead ends: 1626 [2021-06-05 03:18:16,858 INFO L226 Difference]: Without dead ends: 1531 [2021-06-05 03:18:16,858 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:16,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2021-06-05 03:18:16,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1451. [2021-06-05 03:18:16,872 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 03:18:16,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 4438 transitions. [2021-06-05 03:18:16,874 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 4438 transitions. Word has length 26 [2021-06-05 03:18:16,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:16,874 INFO L482 AbstractCegarLoop]: Abstraction has 1451 states and 4438 transitions. [2021-06-05 03:18:16,874 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:16,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 4438 transitions. [2021-06-05 03:18:16,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:16,876 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:16,876 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:16,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-05 03:18:16,876 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:16,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:16,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1919705314, now seen corresponding path program 76 times [2021-06-05 03:18:16,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:16,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977632811] [2021-06-05 03:18:16,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:16,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:16,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977632811] [2021-06-05 03:18:16,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977632811] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:16,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:16,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:16,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606271426] [2021-06-05 03:18:16,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:16,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:16,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:16,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:16,928 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 03:18:17,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:17,068 INFO L93 Difference]: Finished difference Result 1742 states and 5269 transitions. [2021-06-05 03:18:17,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:17,069 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 03:18:17,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:17,071 INFO L225 Difference]: With dead ends: 1742 [2021-06-05 03:18:17,071 INFO L226 Difference]: Without dead ends: 1653 [2021-06-05 03:18:17,071 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:17,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2021-06-05 03:18:17,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1461. [2021-06-05 03:18:17,088 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 03:18:17,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4467 transitions. [2021-06-05 03:18:17,090 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4467 transitions. Word has length 26 [2021-06-05 03:18:17,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:17,091 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4467 transitions. [2021-06-05 03:18:17,091 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 03:18:17,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4467 transitions. [2021-06-05 03:18:17,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:17,092 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:17,092 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 03:18:17,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-05 03:18:17,092 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:17,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:17,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1333154466, now seen corresponding path program 77 times [2021-06-05 03:18:17,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:17,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713686146] [2021-06-05 03:18:17,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:17,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:17,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713686146] [2021-06-05 03:18:17,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713686146] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:17,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:17,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:17,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884606194] [2021-06-05 03:18:17,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:17,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:17,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:17,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:17,156 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 03:18:17,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:17,342 INFO L93 Difference]: Finished difference Result 1678 states and 5043 transitions. [2021-06-05 03:18:17,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:17,343 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:17,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:17,345 INFO L225 Difference]: With dead ends: 1678 [2021-06-05 03:18:17,345 INFO L226 Difference]: Without dead ends: 1590 [2021-06-05 03:18:17,345 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:17,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-06-05 03:18:17,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1461. [2021-06-05 03:18:17,359 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 03:18:17,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4467 transitions. [2021-06-05 03:18:17,362 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4467 transitions. Word has length 26 [2021-06-05 03:18:17,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:17,362 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4467 transitions. [2021-06-05 03:18:17,362 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:17,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4467 transitions. [2021-06-05 03:18:17,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:17,364 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:17,364 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:17,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-05 03:18:17,364 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:17,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:17,364 INFO L82 PathProgramCache]: Analyzing trace with hash -2045222308, now seen corresponding path program 78 times [2021-06-05 03:18:17,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:17,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172995084] [2021-06-05 03:18:17,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:17,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:17,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172995084] [2021-06-05 03:18:17,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172995084] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:17,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:17,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:17,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126876399] [2021-06-05 03:18:17,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:17,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:17,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:17,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:17,431 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 03:18:17,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:17,607 INFO L93 Difference]: Finished difference Result 1816 states and 5475 transitions. [2021-06-05 03:18:17,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:17,607 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:17,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:17,609 INFO L225 Difference]: With dead ends: 1816 [2021-06-05 03:18:17,609 INFO L226 Difference]: Without dead ends: 1722 [2021-06-05 03:18:17,609 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:17,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-06-05 03:18:17,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1485. [2021-06-05 03:18:17,624 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 03:18:17,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4546 transitions. [2021-06-05 03:18:17,627 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4546 transitions. Word has length 26 [2021-06-05 03:18:17,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:17,627 INFO L482 AbstractCegarLoop]: Abstraction has 1485 states and 4546 transitions. [2021-06-05 03:18:17,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:17,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4546 transitions. [2021-06-05 03:18:17,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:17,628 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:17,628 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 03:18:17,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-05 03:18:17,629 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:17,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:17,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1286512978, now seen corresponding path program 79 times [2021-06-05 03:18:17,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:17,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626780789] [2021-06-05 03:18:17,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:17,683 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 03:18:17,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:17,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626780789] [2021-06-05 03:18:17,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626780789] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:17,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:17,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:17,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081069353] [2021-06-05 03:18:17,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:17,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:17,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:17,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:17,684 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 03:18:17,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:17,815 INFO L93 Difference]: Finished difference Result 1851 states and 5576 transitions. [2021-06-05 03:18:17,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:17,816 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 03:18:17,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:17,818 INFO L225 Difference]: With dead ends: 1851 [2021-06-05 03:18:17,818 INFO L226 Difference]: Without dead ends: 1679 [2021-06-05 03:18:17,818 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:17,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2021-06-05 03:18:17,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1453. [2021-06-05 03:18:17,833 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 03:18:17,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 4436 transitions. [2021-06-05 03:18:17,835 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 4436 transitions. Word has length 26 [2021-06-05 03:18:17,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:17,835 INFO L482 AbstractCegarLoop]: Abstraction has 1453 states and 4436 transitions. [2021-06-05 03:18:17,835 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 03:18:17,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 4436 transitions. [2021-06-05 03:18:17,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:17,837 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:17,837 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:17,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-05 03:18:17,837 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:17,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:17,837 INFO L82 PathProgramCache]: Analyzing trace with hash -292918668, now seen corresponding path program 80 times [2021-06-05 03:18:17,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:17,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206064698] [2021-06-05 03:18:17,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:17,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:17,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206064698] [2021-06-05 03:18:17,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206064698] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:17,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:17,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:17,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39635229] [2021-06-05 03:18:17,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:17,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:17,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:17,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:17,899 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 03:18:18,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:18,071 INFO L93 Difference]: Finished difference Result 1732 states and 5178 transitions. [2021-06-05 03:18:18,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:18,071 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 03:18:18,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:18,074 INFO L225 Difference]: With dead ends: 1732 [2021-06-05 03:18:18,074 INFO L226 Difference]: Without dead ends: 1593 [2021-06-05 03:18:18,074 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:18,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2021-06-05 03:18:18,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1443. [2021-06-05 03:18:18,088 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 03:18:18,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 4396 transitions. [2021-06-05 03:18:18,090 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 4396 transitions. Word has length 26 [2021-06-05 03:18:18,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:18,090 INFO L482 AbstractCegarLoop]: Abstraction has 1443 states and 4396 transitions. [2021-06-05 03:18:18,090 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:18,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 4396 transitions. [2021-06-05 03:18:18,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:18,092 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:18,092 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 03:18:18,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-05 03:18:18,092 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:18,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:18,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1145380296, now seen corresponding path program 81 times [2021-06-05 03:18:18,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:18,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870477708] [2021-06-05 03:18:18,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:18,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:18,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870477708] [2021-06-05 03:18:18,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870477708] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:18,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:18,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:18,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653713630] [2021-06-05 03:18:18,143 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:18,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:18,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:18,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:18,143 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 03:18:18,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:18,274 INFO L93 Difference]: Finished difference Result 1745 states and 5234 transitions. [2021-06-05 03:18:18,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:18,275 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 03:18:18,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:18,277 INFO L225 Difference]: With dead ends: 1745 [2021-06-05 03:18:18,277 INFO L226 Difference]: Without dead ends: 1660 [2021-06-05 03:18:18,277 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:18,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-06-05 03:18:18,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1481. [2021-06-05 03:18:18,292 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 03:18:18,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4515 transitions. [2021-06-05 03:18:18,294 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4515 transitions. Word has length 26 [2021-06-05 03:18:18,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:18,294 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 4515 transitions. [2021-06-05 03:18:18,294 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 03:18:18,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4515 transitions. [2021-06-05 03:18:18,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:18,296 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:18,296 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:18,296 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-05 03:18:18,296 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:18,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:18,296 INFO L82 PathProgramCache]: Analyzing trace with hash -275935688, now seen corresponding path program 82 times [2021-06-05 03:18:18,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:18,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060742428] [2021-06-05 03:18:18,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:18,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:18,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060742428] [2021-06-05 03:18:18,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060742428] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:18,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:18,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:18,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015703336] [2021-06-05 03:18:18,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:18,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:18,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:18,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:18,362 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 03:18:18,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:18,520 INFO L93 Difference]: Finished difference Result 1788 states and 5355 transitions. [2021-06-05 03:18:18,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:18,520 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:18,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:18,523 INFO L225 Difference]: With dead ends: 1788 [2021-06-05 03:18:18,523 INFO L226 Difference]: Without dead ends: 1595 [2021-06-05 03:18:18,523 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:18,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2021-06-05 03:18:18,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1441. [2021-06-05 03:18:18,539 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 03:18:18,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 4389 transitions. [2021-06-05 03:18:18,542 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 4389 transitions. Word has length 26 [2021-06-05 03:18:18,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:18,542 INFO L482 AbstractCegarLoop]: Abstraction has 1441 states and 4389 transitions. [2021-06-05 03:18:18,542 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 03:18:18,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 4389 transitions. [2021-06-05 03:18:18,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:18,543 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:18,543 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 03:18:18,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-05 03:18:18,544 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:18,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:18,544 INFO L82 PathProgramCache]: Analyzing trace with hash -263995784, now seen corresponding path program 83 times [2021-06-05 03:18:18,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:18,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369768208] [2021-06-05 03:18:18,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:18,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:18,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369768208] [2021-06-05 03:18:18,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369768208] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:18,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:18,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:18,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416698612] [2021-06-05 03:18:18,615 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:18,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:18,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:18,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:18,616 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 03:18:18,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:18,776 INFO L93 Difference]: Finished difference Result 1658 states and 4979 transitions. [2021-06-05 03:18:18,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:18,777 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:18,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:18,779 INFO L225 Difference]: With dead ends: 1658 [2021-06-05 03:18:18,779 INFO L226 Difference]: Without dead ends: 1573 [2021-06-05 03:18:18,779 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:18,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-06-05 03:18:18,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1444. [2021-06-05 03:18:18,793 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 03:18:18,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4397 transitions. [2021-06-05 03:18:18,795 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4397 transitions. Word has length 26 [2021-06-05 03:18:18,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:18,796 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 4397 transitions. [2021-06-05 03:18:18,796 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 03:18:18,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4397 transitions. [2021-06-05 03:18:18,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:18,797 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:18,797 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 03:18:18,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-05 03:18:18,797 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:18,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:18,797 INFO L82 PathProgramCache]: Analyzing trace with hash 605448824, now seen corresponding path program 84 times [2021-06-05 03:18:18,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:18,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911002809] [2021-06-05 03:18:18,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:18,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:18,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:18,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911002809] [2021-06-05 03:18:18,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911002809] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:18,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:18,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:18,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082524341] [2021-06-05 03:18:18,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:18,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:18,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:18,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:18,876 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 03:18:19,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:19,045 INFO L93 Difference]: Finished difference Result 1729 states and 5190 transitions. [2021-06-05 03:18:19,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:19,045 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:19,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:19,047 INFO L225 Difference]: With dead ends: 1729 [2021-06-05 03:18:19,047 INFO L226 Difference]: Without dead ends: 1634 [2021-06-05 03:18:19,048 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 03:18:19,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-06-05 03:18:19,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1464. [2021-06-05 03:18:19,062 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 03:18:19,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4456 transitions. [2021-06-05 03:18:19,064 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4456 transitions. Word has length 26 [2021-06-05 03:18:19,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:19,064 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 4456 transitions. [2021-06-05 03:18:19,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:19,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4456 transitions. [2021-06-05 03:18:19,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:19,066 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:19,066 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:19,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-05 03:18:19,066 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:19,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:19,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1417651412, now seen corresponding path program 85 times [2021-06-05 03:18:19,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:19,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472442937] [2021-06-05 03:18:19,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:19,127 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 03:18:19,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:19,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472442937] [2021-06-05 03:18:19,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472442937] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:19,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:19,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:19,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201550195] [2021-06-05 03:18:19,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:19,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:19,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:19,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:19,128 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 03:18:19,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:19,295 INFO L93 Difference]: Finished difference Result 1739 states and 5230 transitions. [2021-06-05 03:18:19,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:19,295 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:19,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:19,297 INFO L225 Difference]: With dead ends: 1739 [2021-06-05 03:18:19,297 INFO L226 Difference]: Without dead ends: 1609 [2021-06-05 03:18:19,297 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:19,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2021-06-05 03:18:19,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1469. [2021-06-05 03:18:19,312 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 03:18:19,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 4454 transitions. [2021-06-05 03:18:19,314 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 4454 transitions. Word has length 26 [2021-06-05 03:18:19,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:19,314 INFO L482 AbstractCegarLoop]: Abstraction has 1469 states and 4454 transitions. [2021-06-05 03:18:19,314 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 03:18:19,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 4454 transitions. [2021-06-05 03:18:19,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:19,315 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:19,315 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:19,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-05 03:18:19,316 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:19,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:19,316 INFO L82 PathProgramCache]: Analyzing trace with hash -472077802, now seen corresponding path program 86 times [2021-06-05 03:18:19,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:19,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61595835] [2021-06-05 03:18:19,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:19,380 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 03:18:19,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:19,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61595835] [2021-06-05 03:18:19,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61595835] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:19,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:19,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:19,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632874363] [2021-06-05 03:18:19,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:19,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:19,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:19,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:19,381 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 03:18:19,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:19,560 INFO L93 Difference]: Finished difference Result 1598 states and 4788 transitions. [2021-06-05 03:18:19,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:19,561 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:19,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:19,563 INFO L225 Difference]: With dead ends: 1598 [2021-06-05 03:18:19,563 INFO L226 Difference]: Without dead ends: 1519 [2021-06-05 03:18:19,563 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 03:18:19,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2021-06-05 03:18:19,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1469. [2021-06-05 03:18:19,577 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 03:18:19,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 4454 transitions. [2021-06-05 03:18:19,579 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 4454 transitions. Word has length 26 [2021-06-05 03:18:19,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:19,579 INFO L482 AbstractCegarLoop]: Abstraction has 1469 states and 4454 transitions. [2021-06-05 03:18:19,579 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:19,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 4454 transitions. [2021-06-05 03:18:19,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:19,580 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:19,580 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 03:18:19,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-05 03:18:19,581 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:19,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:19,581 INFO L82 PathProgramCache]: Analyzing trace with hash 397366806, now seen corresponding path program 87 times [2021-06-05 03:18:19,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:19,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589330523] [2021-06-05 03:18:19,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:19,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:19,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:19,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589330523] [2021-06-05 03:18:19,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589330523] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:19,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:19,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:19,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848443309] [2021-06-05 03:18:19,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:19,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:19,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:19,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:19,642 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 03:18:19,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:19,812 INFO L93 Difference]: Finished difference Result 1617 states and 4837 transitions. [2021-06-05 03:18:19,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:19,813 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:19,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:19,815 INFO L225 Difference]: With dead ends: 1617 [2021-06-05 03:18:19,815 INFO L226 Difference]: Without dead ends: 1522 [2021-06-05 03:18:19,815 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:19,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-06-05 03:18:19,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1471. [2021-06-05 03:18:19,829 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 03:18:19,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 4459 transitions. [2021-06-05 03:18:19,831 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 4459 transitions. Word has length 26 [2021-06-05 03:18:19,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:19,831 INFO L482 AbstractCegarLoop]: Abstraction has 1471 states and 4459 transitions. [2021-06-05 03:18:19,831 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 03:18:19,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 4459 transitions. [2021-06-05 03:18:19,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:19,832 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:19,833 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 03:18:19,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-05 03:18:19,833 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:19,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:19,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1071344424, now seen corresponding path program 88 times [2021-06-05 03:18:19,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:19,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350815445] [2021-06-05 03:18:19,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:19,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:19,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350815445] [2021-06-05 03:18:19,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350815445] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:19,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:19,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:19,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964148388] [2021-06-05 03:18:19,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:19,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:19,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:19,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:19,893 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 03:18:20,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:20,065 INFO L93 Difference]: Finished difference Result 1682 states and 5045 transitions. [2021-06-05 03:18:20,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:20,066 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 03:18:20,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:20,068 INFO L225 Difference]: With dead ends: 1682 [2021-06-05 03:18:20,068 INFO L226 Difference]: Without dead ends: 1603 [2021-06-05 03:18:20,068 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:20,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2021-06-05 03:18:20,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1470. [2021-06-05 03:18:20,082 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 03:18:20,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4455 transitions. [2021-06-05 03:18:20,084 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4455 transitions. Word has length 26 [2021-06-05 03:18:20,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:20,085 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4455 transitions. [2021-06-05 03:18:20,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:20,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4455 transitions. [2021-06-05 03:18:20,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:20,086 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:20,086 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:20,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-05 03:18:20,086 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:20,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:20,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1644741700, now seen corresponding path program 89 times [2021-06-05 03:18:20,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:20,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146818727] [2021-06-05 03:18:20,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:20,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:20,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146818727] [2021-06-05 03:18:20,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146818727] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:20,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:20,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:20,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443818409] [2021-06-05 03:18:20,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:20,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:20,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:20,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:20,156 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 03:18:20,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:20,347 INFO L93 Difference]: Finished difference Result 1669 states and 5007 transitions. [2021-06-05 03:18:20,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:20,348 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 03:18:20,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:20,350 INFO L225 Difference]: With dead ends: 1669 [2021-06-05 03:18:20,350 INFO L226 Difference]: Without dead ends: 1580 [2021-06-05 03:18:20,350 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:20,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-06-05 03:18:20,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1469. [2021-06-05 03:18:20,364 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 03:18:20,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 4449 transitions. [2021-06-05 03:18:20,367 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 4449 transitions. Word has length 26 [2021-06-05 03:18:20,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:20,367 INFO L482 AbstractCegarLoop]: Abstraction has 1469 states and 4449 transitions. [2021-06-05 03:18:20,367 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:20,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 4449 transitions. [2021-06-05 03:18:20,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:20,368 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:20,368 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:20,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-05 03:18:20,368 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:20,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:20,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1058190852, now seen corresponding path program 90 times [2021-06-05 03:18:20,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:20,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118771230] [2021-06-05 03:18:20,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:20,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:20,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:20,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118771230] [2021-06-05 03:18:20,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118771230] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:20,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:20,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:20,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326041227] [2021-06-05 03:18:20,430 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:20,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:20,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:20,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:20,430 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 03:18:20,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:20,611 INFO L93 Difference]: Finished difference Result 1654 states and 4951 transitions. [2021-06-05 03:18:20,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:20,612 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:20,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:20,614 INFO L225 Difference]: With dead ends: 1654 [2021-06-05 03:18:20,614 INFO L226 Difference]: Without dead ends: 1566 [2021-06-05 03:18:20,614 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 03:18:20,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-06-05 03:18:20,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1470. [2021-06-05 03:18:20,628 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 03:18:20,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4453 transitions. [2021-06-05 03:18:20,630 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4453 transitions. Word has length 26 [2021-06-05 03:18:20,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:20,630 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4453 transitions. [2021-06-05 03:18:20,630 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:20,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4453 transitions. [2021-06-05 03:18:20,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:20,631 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:20,631 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:20,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-05 03:18:20,632 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:20,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:20,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1770258694, now seen corresponding path program 91 times [2021-06-05 03:18:20,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:20,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597569779] [2021-06-05 03:18:20,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:20,690 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 03:18:20,690 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:20,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597569779] [2021-06-05 03:18:20,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597569779] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:20,690 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:20,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:20,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638924929] [2021-06-05 03:18:20,691 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:20,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:20,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:20,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:20,691 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 03:18:20,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:20,861 INFO L93 Difference]: Finished difference Result 1673 states and 4993 transitions. [2021-06-05 03:18:20,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:20,862 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:20,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:20,864 INFO L225 Difference]: With dead ends: 1673 [2021-06-05 03:18:20,864 INFO L226 Difference]: Without dead ends: 1579 [2021-06-05 03:18:20,864 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:20,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-06-05 03:18:20,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1475. [2021-06-05 03:18:20,878 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 03:18:20,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4474 transitions. [2021-06-05 03:18:20,880 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4474 transitions. Word has length 26 [2021-06-05 03:18:20,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:20,880 INFO L482 AbstractCegarLoop]: Abstraction has 1475 states and 4474 transitions. [2021-06-05 03:18:20,880 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:20,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4474 transitions. [2021-06-05 03:18:20,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:20,882 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:20,882 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:20,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-05 03:18:20,882 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:20,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:20,882 INFO L82 PathProgramCache]: Analyzing trace with hash -678885768, now seen corresponding path program 92 times [2021-06-05 03:18:20,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:20,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652856262] [2021-06-05 03:18:20,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:20,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:20,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652856262] [2021-06-05 03:18:20,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652856262] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:20,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:20,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:20,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138860650] [2021-06-05 03:18:20,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:20,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:20,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:20,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:20,955 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 03:18:21,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:21,126 INFO L93 Difference]: Finished difference Result 1627 states and 4876 transitions. [2021-06-05 03:18:21,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:21,126 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:21,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:21,129 INFO L225 Difference]: With dead ends: 1627 [2021-06-05 03:18:21,129 INFO L226 Difference]: Without dead ends: 1548 [2021-06-05 03:18:21,129 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 03:18:21,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-06-05 03:18:21,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1475. [2021-06-05 03:18:21,143 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 03:18:21,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4474 transitions. [2021-06-05 03:18:21,145 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4474 transitions. Word has length 26 [2021-06-05 03:18:21,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:21,146 INFO L482 AbstractCegarLoop]: Abstraction has 1475 states and 4474 transitions. [2021-06-05 03:18:21,146 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 03:18:21,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4474 transitions. [2021-06-05 03:18:21,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:21,147 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:21,147 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 03:18:21,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-05 03:18:21,147 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:21,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:21,147 INFO L82 PathProgramCache]: Analyzing trace with hash 190558840, now seen corresponding path program 93 times [2021-06-05 03:18:21,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:21,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078615498] [2021-06-05 03:18:21,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:21,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:21,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:21,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078615498] [2021-06-05 03:18:21,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078615498] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:21,208 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:21,208 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:21,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174019858] [2021-06-05 03:18:21,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:21,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:21,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:21,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:21,209 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 03:18:21,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:21,379 INFO L93 Difference]: Finished difference Result 1646 states and 4929 transitions. [2021-06-05 03:18:21,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:21,380 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:21,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:21,382 INFO L225 Difference]: With dead ends: 1646 [2021-06-05 03:18:21,382 INFO L226 Difference]: Without dead ends: 1551 [2021-06-05 03:18:21,382 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 03:18:21,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2021-06-05 03:18:21,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1478. [2021-06-05 03:18:21,396 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 03:18:21,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 4482 transitions. [2021-06-05 03:18:21,398 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 4482 transitions. Word has length 26 [2021-06-05 03:18:21,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:21,398 INFO L482 AbstractCegarLoop]: Abstraction has 1478 states and 4482 transitions. [2021-06-05 03:18:21,398 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 03:18:21,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 4482 transitions. [2021-06-05 03:18:21,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:21,400 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:21,400 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 03:18:21,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-05 03:18:21,400 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:21,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:21,400 INFO L82 PathProgramCache]: Analyzing trace with hash 2111242710, now seen corresponding path program 94 times [2021-06-05 03:18:21,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:21,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498837979] [2021-06-05 03:18:21,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:21,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:21,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498837979] [2021-06-05 03:18:21,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498837979] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:21,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:21,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:21,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466465362] [2021-06-05 03:18:21,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:21,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:21,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:21,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:21,475 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 03:18:21,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:21,651 INFO L93 Difference]: Finished difference Result 1664 states and 4981 transitions. [2021-06-05 03:18:21,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:21,651 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:21,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:21,653 INFO L225 Difference]: With dead ends: 1664 [2021-06-05 03:18:21,653 INFO L226 Difference]: Without dead ends: 1579 [2021-06-05 03:18:21,653 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 03:18:21,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-06-05 03:18:21,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1477. [2021-06-05 03:18:21,667 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 03:18:21,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 4475 transitions. [2021-06-05 03:18:21,669 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 4475 transitions. Word has length 26 [2021-06-05 03:18:21,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:21,669 INFO L482 AbstractCegarLoop]: Abstraction has 1477 states and 4475 transitions. [2021-06-05 03:18:21,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:21,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 4475 transitions. [2021-06-05 03:18:21,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:21,671 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:21,671 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:21,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-05 03:18:21,671 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:21,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:21,671 INFO L82 PathProgramCache]: Analyzing trace with hash -63786894, now seen corresponding path program 95 times [2021-06-05 03:18:21,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:21,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115745814] [2021-06-05 03:18:21,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:21,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:21,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115745814] [2021-06-05 03:18:21,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115745814] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:21,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:21,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:21,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576346329] [2021-06-05 03:18:21,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:21,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:21,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:21,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:21,738 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 03:18:21,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:21,906 INFO L93 Difference]: Finished difference Result 1654 states and 4965 transitions. [2021-06-05 03:18:21,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:21,906 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:21,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:21,908 INFO L225 Difference]: With dead ends: 1654 [2021-06-05 03:18:21,908 INFO L226 Difference]: Without dead ends: 1554 [2021-06-05 03:18:21,908 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:21,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-06-05 03:18:21,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1475. [2021-06-05 03:18:21,922 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 03:18:21,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4473 transitions. [2021-06-05 03:18:21,925 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4473 transitions. Word has length 26 [2021-06-05 03:18:21,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:21,925 INFO L482 AbstractCegarLoop]: Abstraction has 1475 states and 4473 transitions. [2021-06-05 03:18:21,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:21,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4473 transitions. [2021-06-05 03:18:21,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:21,926 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:21,926 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:21,926 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-05 03:18:21,926 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:21,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:21,927 INFO L82 PathProgramCache]: Analyzing trace with hash -2121513890, now seen corresponding path program 96 times [2021-06-05 03:18:21,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:21,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60569080] [2021-06-05 03:18:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:21,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:21,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60569080] [2021-06-05 03:18:21,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60569080] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:21,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:21,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:21,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430935817] [2021-06-05 03:18:21,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:21,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:21,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:21,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:21,994 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 03:18:22,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:22,167 INFO L93 Difference]: Finished difference Result 1649 states and 4952 transitions. [2021-06-05 03:18:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:22,167 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:22,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:22,169 INFO L225 Difference]: With dead ends: 1649 [2021-06-05 03:18:22,170 INFO L226 Difference]: Without dead ends: 1561 [2021-06-05 03:18:22,170 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:22,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-06-05 03:18:22,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1481. [2021-06-05 03:18:22,184 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 03:18:22,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4491 transitions. [2021-06-05 03:18:22,186 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4491 transitions. Word has length 26 [2021-06-05 03:18:22,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:22,186 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 4491 transitions. [2021-06-05 03:18:22,186 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:22,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4491 transitions. [2021-06-05 03:18:22,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:22,188 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:22,188 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:22,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-05 03:18:22,188 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:22,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:22,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1461385564, now seen corresponding path program 97 times [2021-06-05 03:18:22,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:22,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488654257] [2021-06-05 03:18:22,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:22,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:22,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:22,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488654257] [2021-06-05 03:18:22,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488654257] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:22,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:22,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:22,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682792271] [2021-06-05 03:18:22,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:22,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:22,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:22,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:22,250 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 03:18:22,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:22,420 INFO L93 Difference]: Finished difference Result 1675 states and 4997 transitions. [2021-06-05 03:18:22,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:22,420 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:22,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:22,422 INFO L225 Difference]: With dead ends: 1675 [2021-06-05 03:18:22,422 INFO L226 Difference]: Without dead ends: 1583 [2021-06-05 03:18:22,422 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:22,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2021-06-05 03:18:22,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1479. [2021-06-05 03:18:22,437 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 03:18:22,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 4480 transitions. [2021-06-05 03:18:22,439 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 4480 transitions. Word has length 26 [2021-06-05 03:18:22,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:22,439 INFO L482 AbstractCegarLoop]: Abstraction has 1479 states and 4480 transitions. [2021-06-05 03:18:22,439 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 4480 transitions. [2021-06-05 03:18:22,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:22,440 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:22,440 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:22,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-05 03:18:22,441 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:22,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:22,441 INFO L82 PathProgramCache]: Analyzing trace with hash 781308860, now seen corresponding path program 98 times [2021-06-05 03:18:22,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:22,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371676084] [2021-06-05 03:18:22,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:22,516 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 03:18:22,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:22,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371676084] [2021-06-05 03:18:22,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371676084] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:22,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:22,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:22,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176392905] [2021-06-05 03:18:22,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:22,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:22,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:22,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:22,517 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 03:18:22,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:22,689 INFO L93 Difference]: Finished difference Result 1599 states and 4788 transitions. [2021-06-05 03:18:22,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:22,689 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:22,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:22,691 INFO L225 Difference]: With dead ends: 1599 [2021-06-05 03:18:22,691 INFO L226 Difference]: Without dead ends: 1480 [2021-06-05 03:18:22,691 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:22,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-06-05 03:18:22,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1444. [2021-06-05 03:18:22,712 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 03:18:22,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4393 transitions. [2021-06-05 03:18:22,715 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4393 transitions. Word has length 26 [2021-06-05 03:18:22,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:22,715 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 4393 transitions. [2021-06-05 03:18:22,715 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:22,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4393 transitions. [2021-06-05 03:18:22,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:22,716 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:22,716 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:22,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-05 03:18:22,716 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:22,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:22,717 INFO L82 PathProgramCache]: Analyzing trace with hash -2101954, now seen corresponding path program 99 times [2021-06-05 03:18:22,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:22,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991834944] [2021-06-05 03:18:22,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:22,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:22,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991834944] [2021-06-05 03:18:22,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991834944] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:22,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:22,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:18:22,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274219396] [2021-06-05 03:18:22,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:18:22,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:22,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:18:22,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:18:22,783 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 03:18:22,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:22,883 INFO L93 Difference]: Finished difference Result 1798 states and 5382 transitions. [2021-06-05 03:18:22,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:18:22,883 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 03:18:22,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:22,886 INFO L225 Difference]: With dead ends: 1798 [2021-06-05 03:18:22,886 INFO L226 Difference]: Without dead ends: 1641 [2021-06-05 03:18:22,886 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.7ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:18:22,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2021-06-05 03:18:22,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1518. [2021-06-05 03:18:22,901 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 03:18:22,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 4611 transitions. [2021-06-05 03:18:22,903 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 4611 transitions. Word has length 26 [2021-06-05 03:18:22,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:22,903 INFO L482 AbstractCegarLoop]: Abstraction has 1518 states and 4611 transitions. [2021-06-05 03:18:22,903 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 03:18:22,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 4611 transitions. [2021-06-05 03:18:22,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:22,905 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:22,905 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:22,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-05 03:18:22,905 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:22,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:22,905 INFO L82 PathProgramCache]: Analyzing trace with hash -861686948, now seen corresponding path program 100 times [2021-06-05 03:18:22,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:22,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045381858] [2021-06-05 03:18:22,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:22,953 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 03:18:22,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:22,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045381858] [2021-06-05 03:18:22,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045381858] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:22,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:22,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:22,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440743718] [2021-06-05 03:18:22,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:22,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:22,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:22,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:22,954 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 03:18:23,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:23,082 INFO L93 Difference]: Finished difference Result 1800 states and 5385 transitions. [2021-06-05 03:18:23,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:23,082 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 03:18:23,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:23,084 INFO L225 Difference]: With dead ends: 1800 [2021-06-05 03:18:23,084 INFO L226 Difference]: Without dead ends: 1650 [2021-06-05 03:18:23,085 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:23,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-06-05 03:18:23,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1502. [2021-06-05 03:18:23,099 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 03:18:23,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 4569 transitions. [2021-06-05 03:18:23,101 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 4569 transitions. Word has length 26 [2021-06-05 03:18:23,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:23,102 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 4569 transitions. [2021-06-05 03:18:23,102 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 03:18:23,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 4569 transitions. [2021-06-05 03:18:23,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:23,103 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:23,103 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 03:18:23,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-05 03:18:23,103 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:23,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:23,103 INFO L82 PathProgramCache]: Analyzing trace with hash -371708032, now seen corresponding path program 101 times [2021-06-05 03:18:23,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:23,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898828530] [2021-06-05 03:18:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:23,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:23,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898828530] [2021-06-05 03:18:23,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898828530] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:23,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:23,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:23,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757072548] [2021-06-05 03:18:23,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:23,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:23,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:23,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:23,161 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 03:18:23,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:23,289 INFO L93 Difference]: Finished difference Result 1960 states and 5843 transitions. [2021-06-05 03:18:23,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:23,290 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 03:18:23,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:23,292 INFO L225 Difference]: With dead ends: 1960 [2021-06-05 03:18:23,292 INFO L226 Difference]: Without dead ends: 1674 [2021-06-05 03:18:23,292 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:23,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2021-06-05 03:18:23,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1624. [2021-06-05 03:18:23,309 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 03:18:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 4866 transitions. [2021-06-05 03:18:23,311 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 4866 transitions. Word has length 26 [2021-06-05 03:18:23,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:23,311 INFO L482 AbstractCegarLoop]: Abstraction has 1624 states and 4866 transitions. [2021-06-05 03:18:23,311 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 03:18:23,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 4866 transitions. [2021-06-05 03:18:23,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:23,313 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:23,313 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:23,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-05 03:18:23,313 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:23,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:23,313 INFO L82 PathProgramCache]: Analyzing trace with hash 552334938, now seen corresponding path program 102 times [2021-06-05 03:18:23,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:23,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591618109] [2021-06-05 03:18:23,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:23,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:23,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591618109] [2021-06-05 03:18:23,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591618109] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:23,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:23,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:23,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532460915] [2021-06-05 03:18:23,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:23,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:23,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:23,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:23,371 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 03:18:23,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:23,533 INFO L93 Difference]: Finished difference Result 1845 states and 5416 transitions. [2021-06-05 03:18:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:23,533 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:23,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:23,535 INFO L225 Difference]: With dead ends: 1845 [2021-06-05 03:18:23,535 INFO L226 Difference]: Without dead ends: 1600 [2021-06-05 03:18:23,535 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:23,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2021-06-05 03:18:23,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1516. [2021-06-05 03:18:23,549 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 03:18:23,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 4482 transitions. [2021-06-05 03:18:23,552 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 4482 transitions. Word has length 26 [2021-06-05 03:18:23,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:23,552 INFO L482 AbstractCegarLoop]: Abstraction has 1516 states and 4482 transitions. [2021-06-05 03:18:23,552 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:23,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 4482 transitions. [2021-06-05 03:18:23,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:23,553 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:23,553 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:23,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-05 03:18:23,553 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:23,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:23,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1983958852, now seen corresponding path program 103 times [2021-06-05 03:18:23,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:23,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95673490] [2021-06-05 03:18:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:23,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:23,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:23,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95673490] [2021-06-05 03:18:23,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95673490] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:23,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:23,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:23,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665084113] [2021-06-05 03:18:23,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:23,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:23,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:23,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:23,617 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 03:18:23,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:23,790 INFO L93 Difference]: Finished difference Result 1776 states and 5183 transitions. [2021-06-05 03:18:23,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:23,791 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:23,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:23,793 INFO L225 Difference]: With dead ends: 1776 [2021-06-05 03:18:23,793 INFO L226 Difference]: Without dead ends: 1640 [2021-06-05 03:18:23,793 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:23,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2021-06-05 03:18:23,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1518. [2021-06-05 03:18:23,807 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 03:18:23,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 4481 transitions. [2021-06-05 03:18:23,809 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 4481 transitions. Word has length 26 [2021-06-05 03:18:23,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:23,809 INFO L482 AbstractCegarLoop]: Abstraction has 1518 states and 4481 transitions. [2021-06-05 03:18:23,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:23,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 4481 transitions. [2021-06-05 03:18:23,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:23,811 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:23,811 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:23,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-05 03:18:23,811 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:23,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:23,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1711741822, now seen corresponding path program 104 times [2021-06-05 03:18:23,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:23,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334236513] [2021-06-05 03:18:23,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:23,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:23,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334236513] [2021-06-05 03:18:23,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334236513] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:23,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:23,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:23,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342081688] [2021-06-05 03:18:23,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:23,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:23,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:23,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:23,875 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 03:18:24,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:24,042 INFO L93 Difference]: Finished difference Result 1746 states and 5066 transitions. [2021-06-05 03:18:24,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:24,043 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:24,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:24,045 INFO L225 Difference]: With dead ends: 1746 [2021-06-05 03:18:24,045 INFO L226 Difference]: Without dead ends: 1617 [2021-06-05 03:18:24,045 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:24,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2021-06-05 03:18:24,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1514. [2021-06-05 03:18:24,059 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 03:18:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 4470 transitions. [2021-06-05 03:18:24,061 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 4470 transitions. Word has length 26 [2021-06-05 03:18:24,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:24,061 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 4470 transitions. [2021-06-05 03:18:24,061 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:24,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 4470 transitions. [2021-06-05 03:18:24,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:24,063 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:24,063 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:24,063 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-05 03:18:24,063 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:24,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:24,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1138344546, now seen corresponding path program 105 times [2021-06-05 03:18:24,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:24,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395290079] [2021-06-05 03:18:24,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:24,122 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 03:18:24,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:24,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395290079] [2021-06-05 03:18:24,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395290079] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:24,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:24,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:24,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492912666] [2021-06-05 03:18:24,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:24,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:24,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:24,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:24,123 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 03:18:24,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:24,286 INFO L93 Difference]: Finished difference Result 1698 states and 4924 transitions. [2021-06-05 03:18:24,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:24,286 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 03:18:24,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:24,288 INFO L225 Difference]: With dead ends: 1698 [2021-06-05 03:18:24,288 INFO L226 Difference]: Without dead ends: 1552 [2021-06-05 03:18:24,289 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:24,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2021-06-05 03:18:24,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1502. [2021-06-05 03:18:24,302 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 03:18:24,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 4439 transitions. [2021-06-05 03:18:24,304 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 4439 transitions. Word has length 26 [2021-06-05 03:18:24,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:24,304 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 4439 transitions. [2021-06-05 03:18:24,304 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:24,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 4439 transitions. [2021-06-05 03:18:24,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:24,306 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:24,306 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:24,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-05 03:18:24,306 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:24,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:24,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1141733984, now seen corresponding path program 106 times [2021-06-05 03:18:24,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:24,306 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118557351] [2021-06-05 03:18:24,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:24,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:24,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:24,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118557351] [2021-06-05 03:18:24,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118557351] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:24,368 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:24,368 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:24,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587175883] [2021-06-05 03:18:24,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:24,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:24,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:24,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:24,369 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 03:18:24,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:24,531 INFO L93 Difference]: Finished difference Result 1727 states and 5036 transitions. [2021-06-05 03:18:24,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:24,532 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:24,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:24,534 INFO L225 Difference]: With dead ends: 1727 [2021-06-05 03:18:24,534 INFO L226 Difference]: Without dead ends: 1598 [2021-06-05 03:18:24,534 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:24,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-06-05 03:18:24,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1526. [2021-06-05 03:18:24,548 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 03:18:24,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 4505 transitions. [2021-06-05 03:18:24,550 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 4505 transitions. Word has length 26 [2021-06-05 03:18:24,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:24,550 INFO L482 AbstractCegarLoop]: Abstraction has 1526 states and 4505 transitions. [2021-06-05 03:18:24,550 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:24,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 4505 transitions. [2021-06-05 03:18:24,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:24,552 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:24,552 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:24,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-05 03:18:24,552 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:24,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:24,552 INFO L82 PathProgramCache]: Analyzing trace with hash 568336708, now seen corresponding path program 107 times [2021-06-05 03:18:24,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:24,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631264139] [2021-06-05 03:18:24,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:24,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:24,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:24,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631264139] [2021-06-05 03:18:24,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631264139] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:24,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:24,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:24,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815010522] [2021-06-05 03:18:24,615 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:24,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:24,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:24,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:24,615 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 03:18:24,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:24,782 INFO L93 Difference]: Finished difference Result 1850 states and 5404 transitions. [2021-06-05 03:18:24,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:24,782 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:24,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:24,785 INFO L225 Difference]: With dead ends: 1850 [2021-06-05 03:18:24,785 INFO L226 Difference]: Without dead ends: 1689 [2021-06-05 03:18:24,785 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:24,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2021-06-05 03:18:24,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1590. [2021-06-05 03:18:24,800 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 03:18:24,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 4683 transitions. [2021-06-05 03:18:24,802 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 4683 transitions. Word has length 26 [2021-06-05 03:18:24,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:24,802 INFO L482 AbstractCegarLoop]: Abstraction has 1590 states and 4683 transitions. [2021-06-05 03:18:24,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:24,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 4683 transitions. [2021-06-05 03:18:24,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:24,810 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:24,810 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 03:18:24,810 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-05 03:18:24,810 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:24,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:24,811 INFO L82 PathProgramCache]: Analyzing trace with hash 442819714, now seen corresponding path program 108 times [2021-06-05 03:18:24,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:24,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858555236] [2021-06-05 03:18:24,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:24,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:24,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:24,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858555236] [2021-06-05 03:18:24,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858555236] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:24,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:24,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:24,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966668981] [2021-06-05 03:18:24,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:24,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:24,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:24,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:24,875 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 03:18:25,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:25,042 INFO L93 Difference]: Finished difference Result 1788 states and 5178 transitions. [2021-06-05 03:18:25,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:25,042 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 03:18:25,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:25,044 INFO L225 Difference]: With dead ends: 1788 [2021-06-05 03:18:25,044 INFO L226 Difference]: Without dead ends: 1636 [2021-06-05 03:18:25,044 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:25,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-06-05 03:18:25,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1524. [2021-06-05 03:18:25,058 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 03:18:25,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 4494 transitions. [2021-06-05 03:18:25,061 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 4494 transitions. Word has length 26 [2021-06-05 03:18:25,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:25,061 INFO L482 AbstractCegarLoop]: Abstraction has 1524 states and 4494 transitions. [2021-06-05 03:18:25,061 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:25,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 4494 transitions. [2021-06-05 03:18:25,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:25,062 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:25,062 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:25,062 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-05 03:18:25,062 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:25,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:25,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1608572506, now seen corresponding path program 109 times [2021-06-05 03:18:25,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:25,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482550801] [2021-06-05 03:18:25,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:25,120 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 03:18:25,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:25,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482550801] [2021-06-05 03:18:25,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482550801] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:25,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:25,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:25,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145257600] [2021-06-05 03:18:25,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:25,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:25,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:25,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:25,121 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 03:18:25,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:25,284 INFO L93 Difference]: Finished difference Result 1802 states and 5245 transitions. [2021-06-05 03:18:25,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:25,284 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:25,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:25,286 INFO L225 Difference]: With dead ends: 1802 [2021-06-05 03:18:25,286 INFO L226 Difference]: Without dead ends: 1586 [2021-06-05 03:18:25,286 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:25,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2021-06-05 03:18:25,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1464. [2021-06-05 03:18:25,300 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 03:18:25,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4318 transitions. [2021-06-05 03:18:25,302 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4318 transitions. Word has length 26 [2021-06-05 03:18:25,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:25,302 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 4318 transitions. [2021-06-05 03:18:25,302 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:25,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4318 transitions. [2021-06-05 03:18:25,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:25,303 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:25,303 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:25,303 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-05 03:18:25,304 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:25,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:25,304 INFO L82 PathProgramCache]: Analyzing trace with hash -2030139044, now seen corresponding path program 110 times [2021-06-05 03:18:25,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:25,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145675504] [2021-06-05 03:18:25,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:25,357 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 03:18:25,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:25,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145675504] [2021-06-05 03:18:25,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145675504] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:25,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:25,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:25,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369466617] [2021-06-05 03:18:25,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:25,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:25,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:25,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:25,358 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 03:18:25,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:25,489 INFO L93 Difference]: Finished difference Result 1765 states and 5135 transitions. [2021-06-05 03:18:25,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:25,489 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 03:18:25,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:25,491 INFO L225 Difference]: With dead ends: 1765 [2021-06-05 03:18:25,491 INFO L226 Difference]: Without dead ends: 1626 [2021-06-05 03:18:25,491 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:25,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2021-06-05 03:18:25,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1511. [2021-06-05 03:18:25,506 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 03:18:25,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 4436 transitions. [2021-06-05 03:18:25,508 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 4436 transitions. Word has length 26 [2021-06-05 03:18:25,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:25,508 INFO L482 AbstractCegarLoop]: Abstraction has 1511 states and 4436 transitions. [2021-06-05 03:18:25,508 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 03:18:25,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 4436 transitions. [2021-06-05 03:18:25,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:25,510 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:25,510 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:25,510 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-06-05 03:18:25,510 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:25,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:25,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1405243258, now seen corresponding path program 111 times [2021-06-05 03:18:25,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:25,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806894332] [2021-06-05 03:18:25,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:25,564 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 03:18:25,564 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:25,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806894332] [2021-06-05 03:18:25,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806894332] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:25,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:25,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:25,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326565447] [2021-06-05 03:18:25,565 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:25,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:25,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:25,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:25,565 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 03:18:25,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:25,724 INFO L93 Difference]: Finished difference Result 1727 states and 5019 transitions. [2021-06-05 03:18:25,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:25,724 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:25,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:25,726 INFO L225 Difference]: With dead ends: 1727 [2021-06-05 03:18:25,727 INFO L226 Difference]: Without dead ends: 1595 [2021-06-05 03:18:25,727 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:25,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2021-06-05 03:18:25,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1473. [2021-06-05 03:18:25,740 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 03:18:25,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 4332 transitions. [2021-06-05 03:18:25,742 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 4332 transitions. Word has length 26 [2021-06-05 03:18:25,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:25,742 INFO L482 AbstractCegarLoop]: Abstraction has 1473 states and 4332 transitions. [2021-06-05 03:18:25,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:25,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 4332 transitions. [2021-06-05 03:18:25,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:25,744 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:25,744 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:25,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-06-05 03:18:25,744 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:25,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:25,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1895222174, now seen corresponding path program 112 times [2021-06-05 03:18:25,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:25,744 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088599380] [2021-06-05 03:18:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:25,796 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 03:18:25,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:25,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088599380] [2021-06-05 03:18:25,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088599380] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:25,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:25,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:25,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842575139] [2021-06-05 03:18:25,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:25,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:25,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:25,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:25,798 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 03:18:25,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:25,943 INFO L93 Difference]: Finished difference Result 1775 states and 5127 transitions. [2021-06-05 03:18:25,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:25,943 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 03:18:25,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:25,945 INFO L225 Difference]: With dead ends: 1775 [2021-06-05 03:18:25,945 INFO L226 Difference]: Without dead ends: 1647 [2021-06-05 03:18:25,945 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:25,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-06-05 03:18:25,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1525. [2021-06-05 03:18:25,960 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 03:18:25,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 4461 transitions. [2021-06-05 03:18:25,962 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 4461 transitions. Word has length 26 [2021-06-05 03:18:25,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:25,962 INFO L482 AbstractCegarLoop]: Abstraction has 1525 states and 4461 transitions. [2021-06-05 03:18:25,963 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 03:18:25,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 4461 transitions. [2021-06-05 03:18:25,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:25,964 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:25,964 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:25,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-06-05 03:18:25,964 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:25,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:25,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1475702152, now seen corresponding path program 113 times [2021-06-05 03:18:25,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:25,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429913862] [2021-06-05 03:18:25,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:26,022 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 03:18:26,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:26,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429913862] [2021-06-05 03:18:26,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429913862] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:26,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:26,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:26,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568163423] [2021-06-05 03:18:26,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:26,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:26,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:26,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:26,023 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 03:18:26,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:26,191 INFO L93 Difference]: Finished difference Result 1738 states and 5008 transitions. [2021-06-05 03:18:26,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:26,192 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:26,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:26,194 INFO L225 Difference]: With dead ends: 1738 [2021-06-05 03:18:26,194 INFO L226 Difference]: Without dead ends: 1633 [2021-06-05 03:18:26,194 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:26,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2021-06-05 03:18:26,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1501. [2021-06-05 03:18:26,208 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 03:18:26,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 4399 transitions. [2021-06-05 03:18:26,211 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 4399 transitions. Word has length 26 [2021-06-05 03:18:26,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:26,211 INFO L482 AbstractCegarLoop]: Abstraction has 1501 states and 4399 transitions. [2021-06-05 03:18:26,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:26,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 4399 transitions. [2021-06-05 03:18:26,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:26,212 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:26,212 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:26,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-06-05 03:18:26,212 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:26,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:26,213 INFO L82 PathProgramCache]: Analyzing trace with hash 282971354, now seen corresponding path program 114 times [2021-06-05 03:18:26,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:26,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397917615] [2021-06-05 03:18:26,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:26,274 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 03:18:26,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:26,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397917615] [2021-06-05 03:18:26,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397917615] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:26,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:26,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:26,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500016968] [2021-06-05 03:18:26,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:26,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:26,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:26,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:26,275 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 03:18:26,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:26,445 INFO L93 Difference]: Finished difference Result 1652 states and 4785 transitions. [2021-06-05 03:18:26,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:26,446 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 03:18:26,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:26,448 INFO L225 Difference]: With dead ends: 1652 [2021-06-05 03:18:26,448 INFO L226 Difference]: Without dead ends: 1573 [2021-06-05 03:18:26,448 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 03:18:26,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-06-05 03:18:26,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1507. [2021-06-05 03:18:26,462 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 03:18:26,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 4409 transitions. [2021-06-05 03:18:26,464 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 4409 transitions. Word has length 26 [2021-06-05 03:18:26,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:26,464 INFO L482 AbstractCegarLoop]: Abstraction has 1507 states and 4409 transitions. [2021-06-05 03:18:26,464 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 03:18:26,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 4409 transitions. [2021-06-05 03:18:26,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:26,468 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:26,468 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:26,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-06-05 03:18:26,468 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:26,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:26,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1152415962, now seen corresponding path program 115 times [2021-06-05 03:18:26,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:26,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335917907] [2021-06-05 03:18:26,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:26,533 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 03:18:26,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:26,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335917907] [2021-06-05 03:18:26,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335917907] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:26,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:26,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:26,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335019483] [2021-06-05 03:18:26,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:26,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:26,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:26,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:26,534 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 03:18:26,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:26,697 INFO L93 Difference]: Finished difference Result 1745 states and 5047 transitions. [2021-06-05 03:18:26,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:26,698 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 03:18:26,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:26,700 INFO L225 Difference]: With dead ends: 1745 [2021-06-05 03:18:26,700 INFO L226 Difference]: Without dead ends: 1641 [2021-06-05 03:18:26,700 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:26,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2021-06-05 03:18:26,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1499. [2021-06-05 03:18:26,714 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 03:18:26,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 4394 transitions. [2021-06-05 03:18:26,716 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 4394 transitions. Word has length 26 [2021-06-05 03:18:26,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:26,716 INFO L482 AbstractCegarLoop]: Abstraction has 1499 states and 4394 transitions. [2021-06-05 03:18:26,716 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:26,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 4394 transitions. [2021-06-05 03:18:26,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:26,717 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:26,717 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:26,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-06-05 03:18:26,718 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:26,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:26,718 INFO L82 PathProgramCache]: Analyzing trace with hash -316295268, now seen corresponding path program 116 times [2021-06-05 03:18:26,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:26,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304333915] [2021-06-05 03:18:26,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:26,778 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 03:18:26,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:26,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304333915] [2021-06-05 03:18:26,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304333915] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:26,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:26,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:26,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302813698] [2021-06-05 03:18:26,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:26,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:26,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:26,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:26,779 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 03:18:26,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:26,952 INFO L93 Difference]: Finished difference Result 1652 states and 4784 transitions. [2021-06-05 03:18:26,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:26,952 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:26,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:26,954 INFO L225 Difference]: With dead ends: 1652 [2021-06-05 03:18:26,954 INFO L226 Difference]: Without dead ends: 1573 [2021-06-05 03:18:26,955 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:26,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-06-05 03:18:26,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1493. [2021-06-05 03:18:26,974 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 03:18:26,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 4384 transitions. [2021-06-05 03:18:26,976 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 4384 transitions. Word has length 26 [2021-06-05 03:18:26,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:26,976 INFO L482 AbstractCegarLoop]: Abstraction has 1493 states and 4384 transitions. [2021-06-05 03:18:26,976 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:26,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 4384 transitions. [2021-06-05 03:18:26,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:26,977 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:26,977 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:26,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-06-05 03:18:26,978 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:26,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:26,978 INFO L82 PathProgramCache]: Analyzing trace with hash -889692544, now seen corresponding path program 117 times [2021-06-05 03:18:26,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:26,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227475138] [2021-06-05 03:18:26,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:27,039 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 03:18:27,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:27,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227475138] [2021-06-05 03:18:27,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227475138] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:27,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:27,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:27,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827906901] [2021-06-05 03:18:27,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:27,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:27,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:27,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:27,040 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 03:18:27,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:27,211 INFO L93 Difference]: Finished difference Result 1700 states and 4918 transitions. [2021-06-05 03:18:27,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:27,212 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 03:18:27,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:27,214 INFO L225 Difference]: With dead ends: 1700 [2021-06-05 03:18:27,214 INFO L226 Difference]: Without dead ends: 1604 [2021-06-05 03:18:27,214 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 03:18:27,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2021-06-05 03:18:27,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1481. [2021-06-05 03:18:27,228 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 03:18:27,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4361 transitions. [2021-06-05 03:18:27,230 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4361 transitions. Word has length 26 [2021-06-05 03:18:27,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:27,230 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 4361 transitions. [2021-06-05 03:18:27,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:27,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4361 transitions. [2021-06-05 03:18:27,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:27,231 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:27,231 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:27,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-06-05 03:18:27,232 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:27,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:27,232 INFO L82 PathProgramCache]: Analyzing trace with hash -664852864, now seen corresponding path program 118 times [2021-06-05 03:18:27,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:27,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348967639] [2021-06-05 03:18:27,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:27,285 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 03:18:27,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:27,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348967639] [2021-06-05 03:18:27,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348967639] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:27,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:27,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:27,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852688083] [2021-06-05 03:18:27,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:27,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:27,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:27,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:27,286 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 03:18:27,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:27,416 INFO L93 Difference]: Finished difference Result 1724 states and 4976 transitions. [2021-06-05 03:18:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:27,417 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 03:18:27,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:27,419 INFO L225 Difference]: With dead ends: 1724 [2021-06-05 03:18:27,419 INFO L226 Difference]: Without dead ends: 1560 [2021-06-05 03:18:27,419 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:27,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2021-06-05 03:18:27,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1470. [2021-06-05 03:18:27,432 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 03:18:27,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4309 transitions. [2021-06-05 03:18:27,434 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4309 transitions. Word has length 26 [2021-06-05 03:18:27,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:27,434 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4309 transitions. [2021-06-05 03:18:27,434 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 03:18:27,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4309 transitions. [2021-06-05 03:18:27,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:27,436 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:27,436 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:27,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-06-05 03:18:27,436 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:27,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:27,436 INFO L82 PathProgramCache]: Analyzing trace with hash 259190106, now seen corresponding path program 119 times [2021-06-05 03:18:27,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:27,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379588849] [2021-06-05 03:18:27,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:27,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:27,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:27,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379588849] [2021-06-05 03:18:27,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379588849] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:27,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:27,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:27,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544403596] [2021-06-05 03:18:27,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:27,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:27,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:27,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:27,496 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 03:18:27,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:27,661 INFO L93 Difference]: Finished difference Result 1671 states and 4816 transitions. [2021-06-05 03:18:27,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:27,661 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:27,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:27,663 INFO L225 Difference]: With dead ends: 1671 [2021-06-05 03:18:27,663 INFO L226 Difference]: Without dead ends: 1566 [2021-06-05 03:18:27,664 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:27,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-06-05 03:18:27,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1446. [2021-06-05 03:18:27,678 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 03:18:27,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 4243 transitions. [2021-06-05 03:18:27,680 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 4243 transitions. Word has length 26 [2021-06-05 03:18:27,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:27,680 INFO L482 AbstractCegarLoop]: Abstraction has 1446 states and 4243 transitions. [2021-06-05 03:18:27,680 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:27,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 4243 transitions. [2021-06-05 03:18:27,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:27,681 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:27,681 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:27,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-06-05 03:18:27,681 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:27,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:27,681 INFO L82 PathProgramCache]: Analyzing trace with hash 376447608, now seen corresponding path program 120 times [2021-06-05 03:18:27,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:27,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237206496] [2021-06-05 03:18:27,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:27,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:27,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237206496] [2021-06-05 03:18:27,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237206496] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:27,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:27,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:27,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981767744] [2021-06-05 03:18:27,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:27,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:27,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:27,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:27,738 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 03:18:27,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:27,901 INFO L93 Difference]: Finished difference Result 1597 states and 4640 transitions. [2021-06-05 03:18:27,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:27,902 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:27,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:27,904 INFO L225 Difference]: With dead ends: 1597 [2021-06-05 03:18:27,904 INFO L226 Difference]: Without dead ends: 1518 [2021-06-05 03:18:27,904 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:27,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-06-05 03:18:27,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1448. [2021-06-05 03:18:27,917 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 03:18:27,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 4250 transitions. [2021-06-05 03:18:27,919 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 4250 transitions. Word has length 26 [2021-06-05 03:18:27,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:27,919 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 4250 transitions. [2021-06-05 03:18:27,919 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 03:18:27,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 4250 transitions. [2021-06-05 03:18:27,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:27,920 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:27,921 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 03:18:27,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-06-05 03:18:27,921 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:27,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:27,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1599135360, now seen corresponding path program 121 times [2021-06-05 03:18:27,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:27,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055025145] [2021-06-05 03:18:27,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:27,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:27,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055025145] [2021-06-05 03:18:27,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055025145] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:27,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:27,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:27,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959740756] [2021-06-05 03:18:27,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:27,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:27,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:27,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:27,994 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 03:18:28,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:28,166 INFO L93 Difference]: Finished difference Result 1668 states and 4799 transitions. [2021-06-05 03:18:28,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:28,166 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:28,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:28,168 INFO L225 Difference]: With dead ends: 1668 [2021-06-05 03:18:28,168 INFO L226 Difference]: Without dead ends: 1579 [2021-06-05 03:18:28,168 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 03:18:28,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-06-05 03:18:28,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1445. [2021-06-05 03:18:28,182 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 03:18:28,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 4236 transitions. [2021-06-05 03:18:28,184 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 4236 transitions. Word has length 26 [2021-06-05 03:18:28,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:28,185 INFO L482 AbstractCegarLoop]: Abstraction has 1445 states and 4236 transitions. [2021-06-05 03:18:28,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:28,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 4236 transitions. [2021-06-05 03:18:28,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:28,186 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:28,186 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:28,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-06-05 03:18:28,186 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:28,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:28,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1192480934, now seen corresponding path program 122 times [2021-06-05 03:18:28,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:28,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117537028] [2021-06-05 03:18:28,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:28,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:28,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117537028] [2021-06-05 03:18:28,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117537028] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:28,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:28,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:28,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241225349] [2021-06-05 03:18:28,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:28,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:28,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:28,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:28,245 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 03:18:28,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:28,406 INFO L93 Difference]: Finished difference Result 1656 states and 4808 transitions. [2021-06-05 03:18:28,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:28,406 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:28,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:28,408 INFO L225 Difference]: With dead ends: 1656 [2021-06-05 03:18:28,408 INFO L226 Difference]: Without dead ends: 1553 [2021-06-05 03:18:28,408 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:28,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2021-06-05 03:18:28,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1387. [2021-06-05 03:18:28,422 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 03:18:28,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 4096 transitions. [2021-06-05 03:18:28,424 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 4096 transitions. Word has length 26 [2021-06-05 03:18:28,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:28,424 INFO L482 AbstractCegarLoop]: Abstraction has 1387 states and 4096 transitions. [2021-06-05 03:18:28,424 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 03:18:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 4096 transitions. [2021-06-05 03:18:28,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:28,425 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:28,425 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:28,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-06-05 03:18:28,425 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:28,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:28,426 INFO L82 PathProgramCache]: Analyzing trace with hash -938795814, now seen corresponding path program 123 times [2021-06-05 03:18:28,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:28,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620640705] [2021-06-05 03:18:28,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:28,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:28,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620640705] [2021-06-05 03:18:28,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620640705] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:28,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:28,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:28,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496568650] [2021-06-05 03:18:28,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:28,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:28,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:28,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:28,498 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 03:18:28,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:28,663 INFO L93 Difference]: Finished difference Result 1532 states and 4467 transitions. [2021-06-05 03:18:28,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:28,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:28,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:28,665 INFO L225 Difference]: With dead ends: 1532 [2021-06-05 03:18:28,666 INFO L226 Difference]: Without dead ends: 1453 [2021-06-05 03:18:28,666 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:28,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-05 03:18:28,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1388. [2021-06-05 03:18:28,678 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 03:18:28,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4100 transitions. [2021-06-05 03:18:28,680 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4100 transitions. Word has length 26 [2021-06-05 03:18:28,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:28,680 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 4100 transitions. [2021-06-05 03:18:28,680 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:28,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4100 transitions. [2021-06-05 03:18:28,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:28,682 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:28,682 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 03:18:28,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-06-05 03:18:28,682 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:28,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:28,682 INFO L82 PathProgramCache]: Analyzing trace with hash -69351206, now seen corresponding path program 124 times [2021-06-05 03:18:28,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:28,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902285034] [2021-06-05 03:18:28,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:28,748 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 03:18:28,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:28,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902285034] [2021-06-05 03:18:28,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902285034] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:28,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:28,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:28,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059297018] [2021-06-05 03:18:28,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:28,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:28,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:28,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:28,749 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 03:18:28,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:28,909 INFO L93 Difference]: Finished difference Result 1568 states and 4567 transitions. [2021-06-05 03:18:28,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:28,910 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 03:18:28,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:28,911 INFO L225 Difference]: With dead ends: 1568 [2021-06-05 03:18:28,912 INFO L226 Difference]: Without dead ends: 1464 [2021-06-05 03:18:28,912 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:28,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-06-05 03:18:28,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1391. [2021-06-05 03:18:28,924 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 03:18:28,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4109 transitions. [2021-06-05 03:18:28,926 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4109 transitions. Word has length 26 [2021-06-05 03:18:28,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:28,926 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 4109 transitions. [2021-06-05 03:18:28,926 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:28,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4109 transitions. [2021-06-05 03:18:28,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:28,928 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:28,928 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:28,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-06-05 03:18:28,928 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:28,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:28,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1538062436, now seen corresponding path program 125 times [2021-06-05 03:18:28,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:28,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880394266] [2021-06-05 03:18:28,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:28,996 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 03:18:28,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:28,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880394266] [2021-06-05 03:18:28,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880394266] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:28,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:28,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:28,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049473510] [2021-06-05 03:18:28,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:28,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:28,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:28,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:28,997 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 03:18:29,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:29,166 INFO L93 Difference]: Finished difference Result 1536 states and 4479 transitions. [2021-06-05 03:18:29,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:29,166 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:29,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:29,168 INFO L225 Difference]: With dead ends: 1536 [2021-06-05 03:18:29,168 INFO L226 Difference]: Without dead ends: 1457 [2021-06-05 03:18:29,168 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:29,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-06-05 03:18:29,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1392. [2021-06-05 03:18:29,180 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 03:18:29,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 4113 transitions. [2021-06-05 03:18:29,182 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 4113 transitions. Word has length 26 [2021-06-05 03:18:29,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:29,182 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 4113 transitions. [2021-06-05 03:18:29,182 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 03:18:29,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 4113 transitions. [2021-06-05 03:18:29,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:29,184 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:29,184 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 03:18:29,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-06-05 03:18:29,184 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:29,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:29,184 INFO L82 PathProgramCache]: Analyzing trace with hash -2111459712, now seen corresponding path program 126 times [2021-06-05 03:18:29,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:29,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833599416] [2021-06-05 03:18:29,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:29,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:29,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:29,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833599416] [2021-06-05 03:18:29,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833599416] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:29,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:29,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:29,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809488525] [2021-06-05 03:18:29,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:29,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:29,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:29,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:29,247 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 03:18:29,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:29,413 INFO L93 Difference]: Finished difference Result 1543 states and 4492 transitions. [2021-06-05 03:18:29,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:29,414 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:29,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:29,415 INFO L225 Difference]: With dead ends: 1543 [2021-06-05 03:18:29,415 INFO L226 Difference]: Without dead ends: 1460 [2021-06-05 03:18:29,416 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:29,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-06-05 03:18:29,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1393. [2021-06-05 03:18:29,428 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 03:18:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 4115 transitions. [2021-06-05 03:18:29,430 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 4115 transitions. Word has length 26 [2021-06-05 03:18:29,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:29,430 INFO L482 AbstractCegarLoop]: Abstraction has 1393 states and 4115 transitions. [2021-06-05 03:18:29,430 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:29,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 4115 transitions. [2021-06-05 03:18:29,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:29,432 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:29,432 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:29,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-06-05 03:18:29,432 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:29,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:29,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1524908864, now seen corresponding path program 127 times [2021-06-05 03:18:29,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:29,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503081903] [2021-06-05 03:18:29,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:29,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:29,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:29,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503081903] [2021-06-05 03:18:29,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503081903] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:29,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:29,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:29,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543924075] [2021-06-05 03:18:29,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:29,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:29,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:29,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:29,500 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 03:18:29,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:29,660 INFO L93 Difference]: Finished difference Result 1572 states and 4601 transitions. [2021-06-05 03:18:29,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:29,661 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:29,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:29,663 INFO L225 Difference]: With dead ends: 1572 [2021-06-05 03:18:29,663 INFO L226 Difference]: Without dead ends: 1475 [2021-06-05 03:18:29,663 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 03:18:29,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2021-06-05 03:18:29,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1390. [2021-06-05 03:18:29,676 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 03:18:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 4104 transitions. [2021-06-05 03:18:29,678 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 4104 transitions. Word has length 26 [2021-06-05 03:18:29,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:29,678 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 4104 transitions. [2021-06-05 03:18:29,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:29,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 4104 transitions. [2021-06-05 03:18:29,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:29,679 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:29,679 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:29,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-06-05 03:18:29,679 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:29,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:29,680 INFO L82 PathProgramCache]: Analyzing trace with hash 2057990590, now seen corresponding path program 128 times [2021-06-05 03:18:29,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:29,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831538415] [2021-06-05 03:18:29,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:29,741 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 03:18:29,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:29,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831538415] [2021-06-05 03:18:29,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831538415] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:29,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:29,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:29,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174581210] [2021-06-05 03:18:29,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:29,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:29,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:29,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:29,742 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 03:18:29,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:29,905 INFO L93 Difference]: Finished difference Result 1586 states and 4616 transitions. [2021-06-05 03:18:29,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:29,905 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:29,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:29,907 INFO L225 Difference]: With dead ends: 1586 [2021-06-05 03:18:29,907 INFO L226 Difference]: Without dead ends: 1498 [2021-06-05 03:18:29,907 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:29,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-06-05 03:18:29,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1391. [2021-06-05 03:18:29,920 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 03:18:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4105 transitions. [2021-06-05 03:18:29,922 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4105 transitions. Word has length 26 [2021-06-05 03:18:29,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:29,922 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 4105 transitions. [2021-06-05 03:18:29,922 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:29,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4105 transitions. [2021-06-05 03:18:29,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:29,924 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:29,924 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:29,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-06-05 03:18:29,924 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:29,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:29,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1145603780, now seen corresponding path program 129 times [2021-06-05 03:18:29,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:29,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616918130] [2021-06-05 03:18:29,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:29,986 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 03:18:29,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:29,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616918130] [2021-06-05 03:18:29,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616918130] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:29,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:29,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:29,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650202887] [2021-06-05 03:18:29,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:29,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:29,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:29,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:29,987 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 03:18:30,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:30,153 INFO L93 Difference]: Finished difference Result 1597 states and 4669 transitions. [2021-06-05 03:18:30,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:30,153 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 03:18:30,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:30,155 INFO L225 Difference]: With dead ends: 1597 [2021-06-05 03:18:30,155 INFO L226 Difference]: Without dead ends: 1518 [2021-06-05 03:18:30,155 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:30,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-06-05 03:18:30,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1397. [2021-06-05 03:18:30,168 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 03:18:30,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 4125 transitions. [2021-06-05 03:18:30,170 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 4125 transitions. Word has length 26 [2021-06-05 03:18:30,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:30,170 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 4125 transitions. [2021-06-05 03:18:30,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:30,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 4125 transitions. [2021-06-05 03:18:30,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:30,171 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:30,171 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:30,171 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-06-05 03:18:30,171 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:30,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:30,172 INFO L82 PathProgramCache]: Analyzing trace with hash -276159172, now seen corresponding path program 130 times [2021-06-05 03:18:30,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:30,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177136488] [2021-06-05 03:18:30,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:30,239 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 03:18:30,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:30,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177136488] [2021-06-05 03:18:30,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177136488] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:30,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:30,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:30,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269365974] [2021-06-05 03:18:30,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:30,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:30,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:30,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:30,240 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 03:18:30,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:30,400 INFO L93 Difference]: Finished difference Result 1624 states and 4728 transitions. [2021-06-05 03:18:30,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:30,400 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:30,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:30,402 INFO L225 Difference]: With dead ends: 1624 [2021-06-05 03:18:30,402 INFO L226 Difference]: Without dead ends: 1520 [2021-06-05 03:18:30,402 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:30,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-06-05 03:18:30,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1388. [2021-06-05 03:18:30,415 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 03:18:30,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4091 transitions. [2021-06-05 03:18:30,417 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4091 transitions. Word has length 26 [2021-06-05 03:18:30,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:30,417 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 4091 transitions. [2021-06-05 03:18:30,417 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:30,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4091 transitions. [2021-06-05 03:18:30,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:30,418 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:30,418 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:30,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-06-05 03:18:30,419 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:30,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:30,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1644524698, now seen corresponding path program 131 times [2021-06-05 03:18:30,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:30,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828455650] [2021-06-05 03:18:30,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:30,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:30,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:30,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828455650] [2021-06-05 03:18:30,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828455650] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:30,480 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:30,480 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:30,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660528591] [2021-06-05 03:18:30,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:30,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:30,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:30,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:30,481 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 03:18:30,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:30,640 INFO L93 Difference]: Finished difference Result 1580 states and 4623 transitions. [2021-06-05 03:18:30,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:30,640 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 03:18:30,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:30,642 INFO L225 Difference]: With dead ends: 1580 [2021-06-05 03:18:30,642 INFO L226 Difference]: Without dead ends: 1492 [2021-06-05 03:18:30,642 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:30,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-06-05 03:18:30,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1389. [2021-06-05 03:18:30,655 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 03:18:30,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 4096 transitions. [2021-06-05 03:18:30,657 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 4096 transitions. Word has length 26 [2021-06-05 03:18:30,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:30,657 INFO L482 AbstractCegarLoop]: Abstraction has 1389 states and 4096 transitions. [2021-06-05 03:18:30,657 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:30,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 4096 transitions. [2021-06-05 03:18:30,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:30,658 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:30,658 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:30,658 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-06-05 03:18:30,658 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:30,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:30,658 INFO L82 PathProgramCache]: Analyzing trace with hash -25644290, now seen corresponding path program 132 times [2021-06-05 03:18:30,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:30,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445076453] [2021-06-05 03:18:30,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:30,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:30,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:30,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445076453] [2021-06-05 03:18:30,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445076453] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:30,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:30,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:30,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944401004] [2021-06-05 03:18:30,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:30,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:30,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:30,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:30,718 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 03:18:30,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:30,880 INFO L93 Difference]: Finished difference Result 1516 states and 4425 transitions. [2021-06-05 03:18:30,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:30,880 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:30,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:30,882 INFO L225 Difference]: With dead ends: 1516 [2021-06-05 03:18:30,882 INFO L226 Difference]: Without dead ends: 1437 [2021-06-05 03:18:30,882 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:30,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2021-06-05 03:18:30,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1388. [2021-06-05 03:18:30,895 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 03:18:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4092 transitions. [2021-06-05 03:18:30,897 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4092 transitions. Word has length 26 [2021-06-05 03:18:30,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:30,897 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 4092 transitions. [2021-06-05 03:18:30,897 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 03:18:30,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4092 transitions. [2021-06-05 03:18:30,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:30,898 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:30,898 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 03:18:30,898 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-06-05 03:18:30,898 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:30,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:30,899 INFO L82 PathProgramCache]: Analyzing trace with hash -599041566, now seen corresponding path program 133 times [2021-06-05 03:18:30,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:30,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223728957] [2021-06-05 03:18:30,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:30,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:30,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223728957] [2021-06-05 03:18:30,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223728957] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:30,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:30,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:30,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916047508] [2021-06-05 03:18:30,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:30,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:30,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:30,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:30,973 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 03:18:31,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:31,138 INFO L93 Difference]: Finished difference Result 1536 states and 4461 transitions. [2021-06-05 03:18:31,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:31,138 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:31,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:31,140 INFO L225 Difference]: With dead ends: 1536 [2021-06-05 03:18:31,140 INFO L226 Difference]: Without dead ends: 1453 [2021-06-05 03:18:31,140 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 03:18:31,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-05 03:18:31,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1386. [2021-06-05 03:18:31,154 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 03:18:31,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 4085 transitions. [2021-06-05 03:18:31,156 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 4085 transitions. Word has length 26 [2021-06-05 03:18:31,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:31,156 INFO L482 AbstractCegarLoop]: Abstraction has 1386 states and 4085 transitions. [2021-06-05 03:18:31,156 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 03:18:31,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 4085 transitions. [2021-06-05 03:18:31,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:31,158 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:31,158 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 03:18:31,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-06-05 03:18:31,158 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:31,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:31,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1417788836, now seen corresponding path program 134 times [2021-06-05 03:18:31,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:31,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259096891] [2021-06-05 03:18:31,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:31,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:31,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:31,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259096891] [2021-06-05 03:18:31,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259096891] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:31,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:31,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:31,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017847495] [2021-06-05 03:18:31,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:31,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:31,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:31,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:31,223 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 03:18:31,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:31,397 INFO L93 Difference]: Finished difference Result 1582 states and 4605 transitions. [2021-06-05 03:18:31,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:31,397 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:31,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:31,399 INFO L225 Difference]: With dead ends: 1582 [2021-06-05 03:18:31,399 INFO L226 Difference]: Without dead ends: 1497 [2021-06-05 03:18:31,399 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:31,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-06-05 03:18:31,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1383. [2021-06-05 03:18:31,412 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 03:18:31,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 4072 transitions. [2021-06-05 03:18:31,414 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 4072 transitions. Word has length 26 [2021-06-05 03:18:31,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:31,414 INFO L482 AbstractCegarLoop]: Abstraction has 1383 states and 4072 transitions. [2021-06-05 03:18:31,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:31,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 4072 transitions. [2021-06-05 03:18:31,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:31,415 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:31,415 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:31,415 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-06-05 03:18:31,416 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:31,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:31,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1848108702, now seen corresponding path program 135 times [2021-06-05 03:18:31,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:31,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543314470] [2021-06-05 03:18:31,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:31,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:31,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:31,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543314470] [2021-06-05 03:18:31,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543314470] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:31,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:31,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:31,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590949627] [2021-06-05 03:18:31,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:31,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:31,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:31,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:31,475 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 03:18:31,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:31,649 INFO L93 Difference]: Finished difference Result 1557 states and 4506 transitions. [2021-06-05 03:18:31,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:31,649 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:31,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:31,651 INFO L225 Difference]: With dead ends: 1557 [2021-06-05 03:18:31,651 INFO L226 Difference]: Without dead ends: 1464 [2021-06-05 03:18:31,651 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 03:18:31,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-06-05 03:18:31,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1372. [2021-06-05 03:18:31,664 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 03:18:31,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 4050 transitions. [2021-06-05 03:18:31,666 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 4050 transitions. Word has length 26 [2021-06-05 03:18:31,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:31,666 INFO L482 AbstractCegarLoop]: Abstraction has 1372 states and 4050 transitions. [2021-06-05 03:18:31,666 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:31,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 4050 transitions. [2021-06-05 03:18:31,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:31,667 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:31,667 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:31,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-06-05 03:18:31,668 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:31,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:31,668 INFO L82 PathProgramCache]: Analyzing trace with hash -782554082, now seen corresponding path program 136 times [2021-06-05 03:18:31,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:31,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607049819] [2021-06-05 03:18:31,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:31,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:31,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607049819] [2021-06-05 03:18:31,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607049819] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:31,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:31,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:18:31,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346685141] [2021-06-05 03:18:31,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:18:31,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:31,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:18:31,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:18:31,709 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 03:18:31,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:31,810 INFO L93 Difference]: Finished difference Result 1654 states and 4846 transitions. [2021-06-05 03:18:31,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:18:31,810 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 03:18:31,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:31,812 INFO L225 Difference]: With dead ends: 1654 [2021-06-05 03:18:31,812 INFO L226 Difference]: Without dead ends: 1575 [2021-06-05 03:18:31,812 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.9ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:18:31,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2021-06-05 03:18:31,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1438. [2021-06-05 03:18:31,827 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 03:18:31,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4247 transitions. [2021-06-05 03:18:31,829 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4247 transitions. Word has length 26 [2021-06-05 03:18:31,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:31,829 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4247 transitions. [2021-06-05 03:18:31,829 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 03:18:31,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4247 transitions. [2021-06-05 03:18:31,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:31,830 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:31,830 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:31,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-06-05 03:18:31,830 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:31,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:31,830 INFO L82 PathProgramCache]: Analyzing trace with hash 440133670, now seen corresponding path program 137 times [2021-06-05 03:18:31,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:31,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024961105] [2021-06-05 03:18:31,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:31,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:31,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:31,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024961105] [2021-06-05 03:18:31,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024961105] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:31,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:31,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:31,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037584394] [2021-06-05 03:18:31,878 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:31,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:31,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:31,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:31,879 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 03:18:32,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:32,002 INFO L93 Difference]: Finished difference Result 1749 states and 5118 transitions. [2021-06-05 03:18:32,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:32,002 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 03:18:32,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:32,005 INFO L225 Difference]: With dead ends: 1749 [2021-06-05 03:18:32,005 INFO L226 Difference]: Without dead ends: 1598 [2021-06-05 03:18:32,005 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:32,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-06-05 03:18:32,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1426. [2021-06-05 03:18:32,020 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 03:18:32,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4209 transitions. [2021-06-05 03:18:32,022 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4209 transitions. Word has length 26 [2021-06-05 03:18:32,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:32,022 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 4209 transitions. [2021-06-05 03:18:32,022 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 03:18:32,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4209 transitions. [2021-06-05 03:18:32,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:32,023 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:32,023 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 03:18:32,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-06-05 03:18:32,024 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:32,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:32,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1794672444, now seen corresponding path program 138 times [2021-06-05 03:18:32,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:32,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877623552] [2021-06-05 03:18:32,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:32,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:32,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877623552] [2021-06-05 03:18:32,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877623552] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:32,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:32,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:32,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491268567] [2021-06-05 03:18:32,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:32,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:32,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:32,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:32,073 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 03:18:32,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:32,201 INFO L93 Difference]: Finished difference Result 1711 states and 4999 transitions. [2021-06-05 03:18:32,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:32,201 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 03:18:32,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:32,203 INFO L225 Difference]: With dead ends: 1711 [2021-06-05 03:18:32,203 INFO L226 Difference]: Without dead ends: 1632 [2021-06-05 03:18:32,203 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:32,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2021-06-05 03:18:32,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1428. [2021-06-05 03:18:32,217 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 03:18:32,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 4214 transitions. [2021-06-05 03:18:32,219 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 4214 transitions. Word has length 26 [2021-06-05 03:18:32,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:32,219 INFO L482 AbstractCegarLoop]: Abstraction has 1428 states and 4214 transitions. [2021-06-05 03:18:32,219 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 03:18:32,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 4214 transitions. [2021-06-05 03:18:32,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:32,220 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:32,220 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 03:18:32,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-06-05 03:18:32,221 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:32,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:32,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1277607100, now seen corresponding path program 139 times [2021-06-05 03:18:32,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:32,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437513416] [2021-06-05 03:18:32,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:32,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:32,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437513416] [2021-06-05 03:18:32,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437513416] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:32,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:32,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:32,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538727251] [2021-06-05 03:18:32,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:32,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:32,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:32,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:32,278 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 03:18:32,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:32,415 INFO L93 Difference]: Finished difference Result 1743 states and 5115 transitions. [2021-06-05 03:18:32,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:32,416 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 03:18:32,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:32,418 INFO L225 Difference]: With dead ends: 1743 [2021-06-05 03:18:32,418 INFO L226 Difference]: Without dead ends: 1660 [2021-06-05 03:18:32,418 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:32,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-06-05 03:18:32,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1428. [2021-06-05 03:18:32,432 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 03:18:32,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 4212 transitions. [2021-06-05 03:18:32,434 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 4212 transitions. Word has length 26 [2021-06-05 03:18:32,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:32,434 INFO L482 AbstractCegarLoop]: Abstraction has 1428 states and 4212 transitions. [2021-06-05 03:18:32,434 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 03:18:32,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 4212 transitions. [2021-06-05 03:18:32,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:32,435 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:32,435 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:32,435 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-06-05 03:18:32,435 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:32,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:32,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1532456486, now seen corresponding path program 140 times [2021-06-05 03:18:32,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:32,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971647447] [2021-06-05 03:18:32,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:32,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:32,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:32,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971647447] [2021-06-05 03:18:32,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971647447] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:32,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:32,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:32,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621645373] [2021-06-05 03:18:32,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:32,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:32,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:32,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:32,484 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 03:18:32,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:32,622 INFO L93 Difference]: Finished difference Result 1741 states and 5077 transitions. [2021-06-05 03:18:32,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:32,623 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 03:18:32,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:32,625 INFO L225 Difference]: With dead ends: 1741 [2021-06-05 03:18:32,625 INFO L226 Difference]: Without dead ends: 1630 [2021-06-05 03:18:32,625 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:32,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2021-06-05 03:18:32,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1396. [2021-06-05 03:18:32,638 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 03:18:32,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 4116 transitions. [2021-06-05 03:18:32,640 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 4116 transitions. Word has length 26 [2021-06-05 03:18:32,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:32,640 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 4116 transitions. [2021-06-05 03:18:32,640 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 03:18:32,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 4116 transitions. [2021-06-05 03:18:32,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:32,642 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:32,642 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:32,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-06-05 03:18:32,642 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:32,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:32,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1774043234, now seen corresponding path program 141 times [2021-06-05 03:18:32,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:32,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375504081] [2021-06-05 03:18:32,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:32,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:32,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:32,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375504081] [2021-06-05 03:18:32,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375504081] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:32,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:32,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:32,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896586542] [2021-06-05 03:18:32,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:32,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:32,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:32,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:32,694 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 03:18:32,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:32,825 INFO L93 Difference]: Finished difference Result 1586 states and 4638 transitions. [2021-06-05 03:18:32,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:32,825 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 03:18:32,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:32,827 INFO L225 Difference]: With dead ends: 1586 [2021-06-05 03:18:32,827 INFO L226 Difference]: Without dead ends: 1507 [2021-06-05 03:18:32,827 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:32,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2021-06-05 03:18:32,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1406. [2021-06-05 03:18:32,840 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 03:18:32,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4146 transitions. [2021-06-05 03:18:32,842 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4146 transitions. Word has length 26 [2021-06-05 03:18:32,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:32,842 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 4146 transitions. [2021-06-05 03:18:32,842 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 03:18:32,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4146 transitions. [2021-06-05 03:18:32,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:32,843 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:32,844 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:32,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-06-05 03:18:32,844 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:32,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:32,844 INFO L82 PathProgramCache]: Analyzing trace with hash -904598626, now seen corresponding path program 142 times [2021-06-05 03:18:32,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:32,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402529836] [2021-06-05 03:18:32,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:32,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:32,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:32,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402529836] [2021-06-05 03:18:32,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402529836] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:32,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:32,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:32,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666776164] [2021-06-05 03:18:32,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:32,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:32,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:32,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:32,893 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 03:18:33,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:33,023 INFO L93 Difference]: Finished difference Result 1622 states and 4736 transitions. [2021-06-05 03:18:33,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:33,023 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 03:18:33,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:33,025 INFO L225 Difference]: With dead ends: 1622 [2021-06-05 03:18:33,025 INFO L226 Difference]: Without dead ends: 1518 [2021-06-05 03:18:33,025 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:33,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-06-05 03:18:33,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1422. [2021-06-05 03:18:33,038 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 03:18:33,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4195 transitions. [2021-06-05 03:18:33,040 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4195 transitions. Word has length 26 [2021-06-05 03:18:33,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:33,040 INFO L482 AbstractCegarLoop]: Abstraction has 1422 states and 4195 transitions. [2021-06-05 03:18:33,040 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 03:18:33,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4195 transitions. [2021-06-05 03:18:33,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:33,041 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:33,042 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 03:18:33,042 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-06-05 03:18:33,042 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:33,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:33,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1921657440, now seen corresponding path program 143 times [2021-06-05 03:18:33,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:33,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432500245] [2021-06-05 03:18:33,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:33,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:33,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432500245] [2021-06-05 03:18:33,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432500245] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:33,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:33,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:33,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918345254] [2021-06-05 03:18:33,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:33,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:33,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:33,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:33,106 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 03:18:33,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:33,272 INFO L93 Difference]: Finished difference Result 1651 states and 4814 transitions. [2021-06-05 03:18:33,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:33,272 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 03:18:33,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:33,274 INFO L225 Difference]: With dead ends: 1651 [2021-06-05 03:18:33,274 INFO L226 Difference]: Without dead ends: 1572 [2021-06-05 03:18:33,275 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:33,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2021-06-05 03:18:33,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1446. [2021-06-05 03:18:33,288 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 03:18:33,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 4261 transitions. [2021-06-05 03:18:33,290 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 4261 transitions. Word has length 26 [2021-06-05 03:18:33,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:33,290 INFO L482 AbstractCegarLoop]: Abstraction has 1446 states and 4261 transitions. [2021-06-05 03:18:33,290 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:33,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 4261 transitions. [2021-06-05 03:18:33,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:33,291 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:33,291 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:33,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-06-05 03:18:33,292 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:33,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:33,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1348260164, now seen corresponding path program 144 times [2021-06-05 03:18:33,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:33,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806110840] [2021-06-05 03:18:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:33,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:33,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:33,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806110840] [2021-06-05 03:18:33,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806110840] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:33,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:33,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:33,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820379615] [2021-06-05 03:18:33,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:33,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:33,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:33,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:33,361 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 03:18:33,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:33,541 INFO L93 Difference]: Finished difference Result 1620 states and 4730 transitions. [2021-06-05 03:18:33,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:33,542 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 03:18:33,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:33,544 INFO L225 Difference]: With dead ends: 1620 [2021-06-05 03:18:33,544 INFO L226 Difference]: Without dead ends: 1509 [2021-06-05 03:18:33,544 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:33,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-06-05 03:18:33,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1461. [2021-06-05 03:18:33,557 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 03:18:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4308 transitions. [2021-06-05 03:18:33,559 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4308 transitions. Word has length 26 [2021-06-05 03:18:33,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:33,559 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4308 transitions. [2021-06-05 03:18:33,559 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:33,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4308 transitions. [2021-06-05 03:18:33,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:33,561 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:33,561 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:33,561 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-06-05 03:18:33,561 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:33,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:33,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1934811012, now seen corresponding path program 145 times [2021-06-05 03:18:33,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:33,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693951626] [2021-06-05 03:18:33,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:33,622 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 03:18:33,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:33,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693951626] [2021-06-05 03:18:33,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693951626] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:33,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:33,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:33,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936949042] [2021-06-05 03:18:33,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:33,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:33,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:33,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:33,623 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 03:18:33,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:33,785 INFO L93 Difference]: Finished difference Result 1737 states and 5065 transitions. [2021-06-05 03:18:33,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:33,786 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 03:18:33,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:33,788 INFO L225 Difference]: With dead ends: 1737 [2021-06-05 03:18:33,788 INFO L226 Difference]: Without dead ends: 1640 [2021-06-05 03:18:33,788 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:33,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2021-06-05 03:18:33,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1487. [2021-06-05 03:18:33,802 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 03:18:33,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 4396 transitions. [2021-06-05 03:18:33,804 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 4396 transitions. Word has length 26 [2021-06-05 03:18:33,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:33,804 INFO L482 AbstractCegarLoop]: Abstraction has 1487 states and 4396 transitions. [2021-06-05 03:18:33,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:33,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 4396 transitions. [2021-06-05 03:18:33,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:33,806 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:33,806 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:33,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-06-05 03:18:33,806 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:33,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:33,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1222743170, now seen corresponding path program 146 times [2021-06-05 03:18:33,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:33,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970552124] [2021-06-05 03:18:33,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:33,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:33,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970552124] [2021-06-05 03:18:33,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970552124] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:33,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:33,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:33,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154282516] [2021-06-05 03:18:33,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:33,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:33,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:33,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:33,864 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 03:18:34,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:34,039 INFO L93 Difference]: Finished difference Result 1672 states and 4884 transitions. [2021-06-05 03:18:34,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:34,039 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:34,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:34,041 INFO L225 Difference]: With dead ends: 1672 [2021-06-05 03:18:34,041 INFO L226 Difference]: Without dead ends: 1584 [2021-06-05 03:18:34,042 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:34,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-06-05 03:18:34,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1485. [2021-06-05 03:18:34,056 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 03:18:34,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4391 transitions. [2021-06-05 03:18:34,058 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4391 transitions. Word has length 26 [2021-06-05 03:18:34,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:34,058 INFO L482 AbstractCegarLoop]: Abstraction has 1485 states and 4391 transitions. [2021-06-05 03:18:34,058 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 03:18:34,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4391 transitions. [2021-06-05 03:18:34,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:34,059 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:34,059 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:34,059 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-06-05 03:18:34,059 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:34,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:34,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1906471334, now seen corresponding path program 147 times [2021-06-05 03:18:34,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:34,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510358740] [2021-06-05 03:18:34,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:34,131 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 03:18:34,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:34,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510358740] [2021-06-05 03:18:34,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510358740] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:34,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:34,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:34,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449722674] [2021-06-05 03:18:34,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:34,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:34,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:34,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:34,131 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 03:18:34,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:34,299 INFO L93 Difference]: Finished difference Result 1717 states and 5001 transitions. [2021-06-05 03:18:34,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:34,299 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:34,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:34,301 INFO L225 Difference]: With dead ends: 1717 [2021-06-05 03:18:34,301 INFO L226 Difference]: Without dead ends: 1584 [2021-06-05 03:18:34,301 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:34,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-06-05 03:18:34,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1461. [2021-06-05 03:18:34,315 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 03:18:34,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4317 transitions. [2021-06-05 03:18:34,317 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4317 transitions. Word has length 26 [2021-06-05 03:18:34,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:34,317 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4317 transitions. [2021-06-05 03:18:34,317 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:34,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4317 transitions. [2021-06-05 03:18:34,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:34,318 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:34,318 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:34,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-06-05 03:18:34,319 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:34,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:34,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1377180688, now seen corresponding path program 148 times [2021-06-05 03:18:34,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:34,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100763143] [2021-06-05 03:18:34,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:34,376 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 03:18:34,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:34,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100763143] [2021-06-05 03:18:34,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100763143] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:34,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:34,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:34,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980376555] [2021-06-05 03:18:34,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:34,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:34,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:34,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:34,377 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 03:18:34,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:34,545 INFO L93 Difference]: Finished difference Result 1724 states and 4996 transitions. [2021-06-05 03:18:34,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:34,546 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:34,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:34,548 INFO L225 Difference]: With dead ends: 1724 [2021-06-05 03:18:34,548 INFO L226 Difference]: Without dead ends: 1544 [2021-06-05 03:18:34,548 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:34,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-06-05 03:18:34,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1422. [2021-06-05 03:18:34,561 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 03:18:34,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4176 transitions. [2021-06-05 03:18:34,563 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4176 transitions. Word has length 26 [2021-06-05 03:18:34,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:34,563 INFO L482 AbstractCegarLoop]: Abstraction has 1422 states and 4176 transitions. [2021-06-05 03:18:34,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:34,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4176 transitions. [2021-06-05 03:18:34,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:34,564 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:34,564 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:34,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-06-05 03:18:34,565 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:34,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:34,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1039485756, now seen corresponding path program 149 times [2021-06-05 03:18:34,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:34,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094650848] [2021-06-05 03:18:34,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:34,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:34,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094650848] [2021-06-05 03:18:34,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094650848] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:34,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:34,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:34,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929019545] [2021-06-05 03:18:34,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:34,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:34,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:34,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:34,628 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 03:18:34,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:34,796 INFO L93 Difference]: Finished difference Result 1593 states and 4622 transitions. [2021-06-05 03:18:34,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:34,796 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:34,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:34,798 INFO L225 Difference]: With dead ends: 1593 [2021-06-05 03:18:34,798 INFO L226 Difference]: Without dead ends: 1514 [2021-06-05 03:18:34,798 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 03:18:34,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-06-05 03:18:34,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1421. [2021-06-05 03:18:34,811 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 03:18:34,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 4172 transitions. [2021-06-05 03:18:34,813 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 4172 transitions. Word has length 26 [2021-06-05 03:18:34,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:34,813 INFO L482 AbstractCegarLoop]: Abstraction has 1421 states and 4172 transitions. [2021-06-05 03:18:34,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:34,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 4172 transitions. [2021-06-05 03:18:34,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:34,815 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:34,815 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:34,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-06-05 03:18:34,815 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:34,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:34,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1908930364, now seen corresponding path program 150 times [2021-06-05 03:18:34,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:34,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774118770] [2021-06-05 03:18:34,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:34,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:34,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:34,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774118770] [2021-06-05 03:18:34,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774118770] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:34,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:34,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:34,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421560363] [2021-06-05 03:18:34,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:34,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:34,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:34,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:34,875 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 03:18:35,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:35,042 INFO L93 Difference]: Finished difference Result 1587 states and 4608 transitions. [2021-06-05 03:18:35,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:35,042 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 03:18:35,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:35,044 INFO L225 Difference]: With dead ends: 1587 [2021-06-05 03:18:35,044 INFO L226 Difference]: Without dead ends: 1483 [2021-06-05 03:18:35,045 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 03:18:35,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2021-06-05 03:18:35,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1422. [2021-06-05 03:18:35,057 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 03:18:35,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4173 transitions. [2021-06-05 03:18:35,059 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4173 transitions. Word has length 26 [2021-06-05 03:18:35,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:35,059 INFO L482 AbstractCegarLoop]: Abstraction has 1422 states and 4173 transitions. [2021-06-05 03:18:35,059 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:35,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4173 transitions. [2021-06-05 03:18:35,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:35,061 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:35,061 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 03:18:35,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-06-05 03:18:35,061 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:35,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:35,061 INFO L82 PathProgramCache]: Analyzing trace with hash 440219134, now seen corresponding path program 151 times [2021-06-05 03:18:35,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:35,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52278818] [2021-06-05 03:18:35,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:35,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:35,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52278818] [2021-06-05 03:18:35,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52278818] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:35,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:35,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:35,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876511928] [2021-06-05 03:18:35,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:35,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:35,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:35,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:35,125 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 03:18:35,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:35,294 INFO L93 Difference]: Finished difference Result 1574 states and 4561 transitions. [2021-06-05 03:18:35,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:35,294 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:35,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:35,296 INFO L225 Difference]: With dead ends: 1574 [2021-06-05 03:18:35,296 INFO L226 Difference]: Without dead ends: 1495 [2021-06-05 03:18:35,296 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:35,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2021-06-05 03:18:35,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1423. [2021-06-05 03:18:35,309 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 03:18:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 4177 transitions. [2021-06-05 03:18:35,311 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 4177 transitions. Word has length 26 [2021-06-05 03:18:35,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:35,311 INFO L482 AbstractCegarLoop]: Abstraction has 1423 states and 4177 transitions. [2021-06-05 03:18:35,311 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:35,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 4177 transitions. [2021-06-05 03:18:35,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:35,313 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:35,313 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:35,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-06-05 03:18:35,313 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:35,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:35,313 INFO L82 PathProgramCache]: Analyzing trace with hash -133178142, now seen corresponding path program 152 times [2021-06-05 03:18:35,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:35,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820533331] [2021-06-05 03:18:35,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:35,372 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 03:18:35,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:35,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820533331] [2021-06-05 03:18:35,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820533331] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:35,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:35,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:35,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167663190] [2021-06-05 03:18:35,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:35,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:35,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:35,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:35,372 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 03:18:35,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:35,557 INFO L93 Difference]: Finished difference Result 1563 states and 4535 transitions. [2021-06-05 03:18:35,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:35,557 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:35,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:35,559 INFO L225 Difference]: With dead ends: 1563 [2021-06-05 03:18:35,559 INFO L226 Difference]: Without dead ends: 1480 [2021-06-05 03:18:35,559 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:35,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-06-05 03:18:35,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1424. [2021-06-05 03:18:35,572 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 03:18:35,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 4179 transitions. [2021-06-05 03:18:35,574 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 4179 transitions. Word has length 26 [2021-06-05 03:18:35,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:35,574 INFO L482 AbstractCegarLoop]: Abstraction has 1424 states and 4179 transitions. [2021-06-05 03:18:35,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:35,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 4179 transitions. [2021-06-05 03:18:35,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:35,576 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:35,576 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:35,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-06-05 03:18:35,576 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:35,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:35,576 INFO L82 PathProgramCache]: Analyzing trace with hash 453372706, now seen corresponding path program 153 times [2021-06-05 03:18:35,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:35,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187878451] [2021-06-05 03:18:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:35,637 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 03:18:35,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:35,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187878451] [2021-06-05 03:18:35,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187878451] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:35,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:35,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:35,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604201314] [2021-06-05 03:18:35,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:35,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:35,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:35,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:35,638 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 03:18:35,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:35,814 INFO L93 Difference]: Finished difference Result 1627 states and 4733 transitions. [2021-06-05 03:18:35,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:35,814 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:35,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:35,816 INFO L225 Difference]: With dead ends: 1627 [2021-06-05 03:18:35,816 INFO L226 Difference]: Without dead ends: 1530 [2021-06-05 03:18:35,816 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:35,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2021-06-05 03:18:35,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1431. [2021-06-05 03:18:35,829 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 03:18:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 4203 transitions. [2021-06-05 03:18:35,831 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 4203 transitions. Word has length 26 [2021-06-05 03:18:35,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:35,831 INFO L482 AbstractCegarLoop]: Abstraction has 1431 states and 4203 transitions. [2021-06-05 03:18:35,831 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 03:18:35,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 4203 transitions. [2021-06-05 03:18:35,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:35,832 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:35,832 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:35,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-06-05 03:18:35,833 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:35,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:35,833 INFO L82 PathProgramCache]: Analyzing trace with hash -258695136, now seen corresponding path program 154 times [2021-06-05 03:18:35,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:35,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906616832] [2021-06-05 03:18:35,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:35,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:35,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906616832] [2021-06-05 03:18:35,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906616832] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:35,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:35,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:35,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162133309] [2021-06-05 03:18:35,891 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:35,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:35,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:35,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:35,891 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 03:18:36,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:36,066 INFO L93 Difference]: Finished difference Result 1607 states and 4663 transitions. [2021-06-05 03:18:36,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:36,067 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:36,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:36,069 INFO L225 Difference]: With dead ends: 1607 [2021-06-05 03:18:36,069 INFO L226 Difference]: Without dead ends: 1519 [2021-06-05 03:18:36,069 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:36,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2021-06-05 03:18:36,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1430. [2021-06-05 03:18:36,082 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 03:18:36,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 4203 transitions. [2021-06-05 03:18:36,084 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 4203 transitions. Word has length 26 [2021-06-05 03:18:36,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:36,084 INFO L482 AbstractCegarLoop]: Abstraction has 1430 states and 4203 transitions. [2021-06-05 03:18:36,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:36,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 4203 transitions. [2021-06-05 03:18:36,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:36,086 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:36,086 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:36,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-06-05 03:18:36,086 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:36,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:36,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1952637280, now seen corresponding path program 155 times [2021-06-05 03:18:36,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:36,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831737950] [2021-06-05 03:18:36,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:36,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:36,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831737950] [2021-06-05 03:18:36,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831737950] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:36,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:36,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:36,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120893518] [2021-06-05 03:18:36,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:36,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:36,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:36,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:36,142 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 03:18:36,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:36,313 INFO L93 Difference]: Finished difference Result 1567 states and 4558 transitions. [2021-06-05 03:18:36,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:36,313 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:36,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:36,315 INFO L225 Difference]: With dead ends: 1567 [2021-06-05 03:18:36,315 INFO L226 Difference]: Without dead ends: 1488 [2021-06-05 03:18:36,315 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:36,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2021-06-05 03:18:36,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1429. [2021-06-05 03:18:36,329 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 03:18:36,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 4199 transitions. [2021-06-05 03:18:36,331 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 4199 transitions. Word has length 26 [2021-06-05 03:18:36,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:36,331 INFO L482 AbstractCegarLoop]: Abstraction has 1429 states and 4199 transitions. [2021-06-05 03:18:36,331 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:36,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 4199 transitions. [2021-06-05 03:18:36,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:36,333 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:36,333 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:36,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-06-05 03:18:36,333 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:36,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:36,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1379240004, now seen corresponding path program 156 times [2021-06-05 03:18:36,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:36,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110180976] [2021-06-05 03:18:36,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:36,394 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 03:18:36,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:36,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110180976] [2021-06-05 03:18:36,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110180976] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:36,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:36,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:36,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8056218] [2021-06-05 03:18:36,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:36,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:36,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:36,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:36,395 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 03:18:36,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:36,569 INFO L93 Difference]: Finished difference Result 1572 states and 4563 transitions. [2021-06-05 03:18:36,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:36,569 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 03:18:36,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:36,571 INFO L225 Difference]: With dead ends: 1572 [2021-06-05 03:18:36,571 INFO L226 Difference]: Without dead ends: 1489 [2021-06-05 03:18:36,571 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 03:18:36,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2021-06-05 03:18:36,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1430. [2021-06-05 03:18:36,585 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 03:18:36,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 4200 transitions. [2021-06-05 03:18:36,587 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 4200 transitions. Word has length 26 [2021-06-05 03:18:36,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:36,587 INFO L482 AbstractCegarLoop]: Abstraction has 1430 states and 4200 transitions. [2021-06-05 03:18:36,587 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:36,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 4200 transitions. [2021-06-05 03:18:36,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:36,588 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:36,588 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 03:18:36,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-06-05 03:18:36,589 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:36,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:36,589 INFO L82 PathProgramCache]: Analyzing trace with hash 560492734, now seen corresponding path program 157 times [2021-06-05 03:18:36,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:36,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496827504] [2021-06-05 03:18:36,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:36,660 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 03:18:36,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:36,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496827504] [2021-06-05 03:18:36,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496827504] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:36,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:36,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:36,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904178823] [2021-06-05 03:18:36,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:36,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:36,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:36,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:36,661 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 03:18:36,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:36,830 INFO L93 Difference]: Finished difference Result 1645 states and 4769 transitions. [2021-06-05 03:18:36,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:36,831 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:36,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:36,833 INFO L225 Difference]: With dead ends: 1645 [2021-06-05 03:18:36,833 INFO L226 Difference]: Without dead ends: 1554 [2021-06-05 03:18:36,833 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:36,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-06-05 03:18:36,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1426. [2021-06-05 03:18:36,846 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 03:18:36,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4186 transitions. [2021-06-05 03:18:36,848 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4186 transitions. Word has length 26 [2021-06-05 03:18:36,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:36,848 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 4186 transitions. [2021-06-05 03:18:36,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4186 transitions. [2021-06-05 03:18:36,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:36,850 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:36,850 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 03:18:36,850 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-06-05 03:18:36,850 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:36,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:36,850 INFO L82 PathProgramCache]: Analyzing trace with hash 130172868, now seen corresponding path program 158 times [2021-06-05 03:18:36,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:36,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736398107] [2021-06-05 03:18:36,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:36,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:36,909 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:36,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736398107] [2021-06-05 03:18:36,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736398107] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:36,909 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:36,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:36,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559950853] [2021-06-05 03:18:36,909 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:36,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:36,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:36,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:36,910 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 03:18:37,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:37,101 INFO L93 Difference]: Finished difference Result 1595 states and 4605 transitions. [2021-06-05 03:18:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:37,101 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:37,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:37,103 INFO L225 Difference]: With dead ends: 1595 [2021-06-05 03:18:37,103 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 03:18:37,103 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 03:18:37,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 03:18:37,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1431. [2021-06-05 03:18:37,116 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 03:18:37,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 4196 transitions. [2021-06-05 03:18:37,118 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 4196 transitions. Word has length 26 [2021-06-05 03:18:37,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:37,118 INFO L482 AbstractCegarLoop]: Abstraction has 1431 states and 4196 transitions. [2021-06-05 03:18:37,118 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:37,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 4196 transitions. [2021-06-05 03:18:37,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:37,120 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:37,120 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:37,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-06-05 03:18:37,120 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:37,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:37,120 INFO L82 PathProgramCache]: Analyzing trace with hash -609950332, now seen corresponding path program 159 times [2021-06-05 03:18:37,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:37,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540946421] [2021-06-05 03:18:37,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:37,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:37,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540946421] [2021-06-05 03:18:37,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540946421] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:37,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:37,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:37,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620276019] [2021-06-05 03:18:37,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:37,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:37,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:37,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:37,219 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 03:18:37,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:37,373 INFO L93 Difference]: Finished difference Result 1626 states and 4726 transitions. [2021-06-05 03:18:37,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:37,373 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:37,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:37,376 INFO L225 Difference]: With dead ends: 1626 [2021-06-05 03:18:37,376 INFO L226 Difference]: Without dead ends: 1529 [2021-06-05 03:18:37,376 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 83.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:37,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2021-06-05 03:18:37,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1429. [2021-06-05 03:18:37,390 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 03:18:37,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 4188 transitions. [2021-06-05 03:18:37,392 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 4188 transitions. Word has length 26 [2021-06-05 03:18:37,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:37,392 INFO L482 AbstractCegarLoop]: Abstraction has 1429 states and 4188 transitions. [2021-06-05 03:18:37,392 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 03:18:37,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 4188 transitions. [2021-06-05 03:18:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:37,393 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:37,393 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:37,393 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-06-05 03:18:37,393 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:37,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:37,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1322018174, now seen corresponding path program 160 times [2021-06-05 03:18:37,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:37,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468125718] [2021-06-05 03:18:37,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:37,459 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 03:18:37,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:37,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468125718] [2021-06-05 03:18:37,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468125718] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:37,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:37,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:37,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485049818] [2021-06-05 03:18:37,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:37,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:37,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:37,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:37,460 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 03:18:37,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:37,627 INFO L93 Difference]: Finished difference Result 1603 states and 4654 transitions. [2021-06-05 03:18:37,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:37,627 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:37,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:37,629 INFO L225 Difference]: With dead ends: 1603 [2021-06-05 03:18:37,629 INFO L226 Difference]: Without dead ends: 1517 [2021-06-05 03:18:37,629 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:37,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2021-06-05 03:18:37,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1437. [2021-06-05 03:18:37,642 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 03:18:37,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 4211 transitions. [2021-06-05 03:18:37,644 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 4211 transitions. Word has length 26 [2021-06-05 03:18:37,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:37,645 INFO L482 AbstractCegarLoop]: Abstraction has 1437 states and 4211 transitions. [2021-06-05 03:18:37,645 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 03:18:37,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 4211 transitions. [2021-06-05 03:18:37,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:37,646 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:37,646 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:37,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-06-05 03:18:37,646 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:37,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:37,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1411777824, now seen corresponding path program 161 times [2021-06-05 03:18:37,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:37,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31365427] [2021-06-05 03:18:37,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:37,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:37,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31365427] [2021-06-05 03:18:37,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31365427] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:37,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:37,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:37,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7666334] [2021-06-05 03:18:37,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:37,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:37,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:37,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:37,706 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 03:18:37,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:37,876 INFO L93 Difference]: Finished difference Result 1577 states and 4563 transitions. [2021-06-05 03:18:37,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:37,876 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:37,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:37,878 INFO L225 Difference]: With dead ends: 1577 [2021-06-05 03:18:37,878 INFO L226 Difference]: Without dead ends: 1482 [2021-06-05 03:18:37,879 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:37,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-06-05 03:18:37,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1420. [2021-06-05 03:18:37,891 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 03:18:37,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 4166 transitions. [2021-06-05 03:18:37,893 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 4166 transitions. Word has length 26 [2021-06-05 03:18:37,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:37,893 INFO L482 AbstractCegarLoop]: Abstraction has 1420 states and 4166 transitions. [2021-06-05 03:18:37,894 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:37,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 4166 transitions. [2021-06-05 03:18:37,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:37,895 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:37,895 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:37,895 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-06-05 03:18:37,895 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:37,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:37,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1692751788, now seen corresponding path program 162 times [2021-06-05 03:18:37,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:37,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189636988] [2021-06-05 03:18:37,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:37,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:37,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189636988] [2021-06-05 03:18:37,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189636988] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:37,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:37,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:37,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349944082] [2021-06-05 03:18:37,944 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:37,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:37,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:37,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:37,945 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 03:18:38,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:38,074 INFO L93 Difference]: Finished difference Result 1724 states and 5023 transitions. [2021-06-05 03:18:38,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:38,074 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 03:18:38,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:38,076 INFO L225 Difference]: With dead ends: 1724 [2021-06-05 03:18:38,076 INFO L226 Difference]: Without dead ends: 1639 [2021-06-05 03:18:38,076 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:38,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-06-05 03:18:38,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1456. [2021-06-05 03:18:38,090 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 03:18:38,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 4275 transitions. [2021-06-05 03:18:38,092 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 4275 transitions. Word has length 26 [2021-06-05 03:18:38,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:38,092 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 4275 transitions. [2021-06-05 03:18:38,092 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 03:18:38,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 4275 transitions. [2021-06-05 03:18:38,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:38,094 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:38,094 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 03:18:38,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-06-05 03:18:38,094 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:38,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:38,094 INFO L82 PathProgramCache]: Analyzing trace with hash 2028818232, now seen corresponding path program 163 times [2021-06-05 03:18:38,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:38,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842656496] [2021-06-05 03:18:38,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:38,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:38,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:38,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842656496] [2021-06-05 03:18:38,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842656496] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:38,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:38,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:38,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976148200] [2021-06-05 03:18:38,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:38,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:38,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:38,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:38,152 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 03:18:38,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:38,313 INFO L93 Difference]: Finished difference Result 1767 states and 5149 transitions. [2021-06-05 03:18:38,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:38,314 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:38,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:38,316 INFO L225 Difference]: With dead ends: 1767 [2021-06-05 03:18:38,316 INFO L226 Difference]: Without dead ends: 1619 [2021-06-05 03:18:38,316 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:38,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2021-06-05 03:18:38,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1417. [2021-06-05 03:18:38,329 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 03:18:38,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 4162 transitions. [2021-06-05 03:18:38,331 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 4162 transitions. Word has length 26 [2021-06-05 03:18:38,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:38,331 INFO L482 AbstractCegarLoop]: Abstraction has 1417 states and 4162 transitions. [2021-06-05 03:18:38,331 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:38,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 4162 transitions. [2021-06-05 03:18:38,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:38,333 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:38,333 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:38,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-06-05 03:18:38,333 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:38,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:38,333 INFO L82 PathProgramCache]: Analyzing trace with hash 891859190, now seen corresponding path program 164 times [2021-06-05 03:18:38,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:38,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166359726] [2021-06-05 03:18:38,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:38,393 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 03:18:38,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:38,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166359726] [2021-06-05 03:18:38,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166359726] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:38,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:38,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:38,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481645528] [2021-06-05 03:18:38,393 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:38,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:38,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:38,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:38,394 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 03:18:38,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:38,559 INFO L93 Difference]: Finished difference Result 1698 states and 4940 transitions. [2021-06-05 03:18:38,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:38,559 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:38,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:38,561 INFO L225 Difference]: With dead ends: 1698 [2021-06-05 03:18:38,561 INFO L226 Difference]: Without dead ends: 1613 [2021-06-05 03:18:38,562 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:38,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2021-06-05 03:18:38,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1419. [2021-06-05 03:18:38,575 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 03:18:38,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 4167 transitions. [2021-06-05 03:18:38,577 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 4167 transitions. Word has length 26 [2021-06-05 03:18:38,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:38,577 INFO L482 AbstractCegarLoop]: Abstraction has 1419 states and 4167 transitions. [2021-06-05 03:18:38,577 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 03:18:38,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 4167 transitions. [2021-06-05 03:18:38,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:38,579 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:38,579 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 03:18:38,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-06-05 03:18:38,579 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:38,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:38,579 INFO L82 PathProgramCache]: Analyzing trace with hash 318461914, now seen corresponding path program 165 times [2021-06-05 03:18:38,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:38,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495391660] [2021-06-05 03:18:38,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:38,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:38,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:38,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495391660] [2021-06-05 03:18:38,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495391660] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:38,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:38,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:38,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501895885] [2021-06-05 03:18:38,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:38,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:38,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:38,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:38,637 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 03:18:38,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:38,809 INFO L93 Difference]: Finished difference Result 1732 states and 5057 transitions. [2021-06-05 03:18:38,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:38,810 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:38,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:38,812 INFO L225 Difference]: With dead ends: 1732 [2021-06-05 03:18:38,812 INFO L226 Difference]: Without dead ends: 1649 [2021-06-05 03:18:38,812 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:38,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-06-05 03:18:38,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1438. [2021-06-05 03:18:38,831 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 03:18:38,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4228 transitions. [2021-06-05 03:18:38,833 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4228 transitions. Word has length 26 [2021-06-05 03:18:38,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:38,834 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4228 transitions. [2021-06-05 03:18:38,834 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:38,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4228 transitions. [2021-06-05 03:18:38,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:38,835 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:38,835 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 03:18:38,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-06-05 03:18:38,835 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:38,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:38,836 INFO L82 PathProgramCache]: Analyzing trace with hash -930605222, now seen corresponding path program 166 times [2021-06-05 03:18:38,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:38,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967330828] [2021-06-05 03:18:38,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:38,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:38,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967330828] [2021-06-05 03:18:38,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967330828] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:38,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:38,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:38,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010778933] [2021-06-05 03:18:38,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:38,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:38,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:38,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:38,897 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 03:18:39,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:39,076 INFO L93 Difference]: Finished difference Result 1748 states and 5073 transitions. [2021-06-05 03:18:39,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:39,076 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:39,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:39,078 INFO L225 Difference]: With dead ends: 1748 [2021-06-05 03:18:39,078 INFO L226 Difference]: Without dead ends: 1639 [2021-06-05 03:18:39,078 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 03:18:39,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-06-05 03:18:39,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1406. [2021-06-05 03:18:39,092 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 03:18:39,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4130 transitions. [2021-06-05 03:18:39,094 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4130 transitions. Word has length 26 [2021-06-05 03:18:39,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:39,094 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 4130 transitions. [2021-06-05 03:18:39,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:39,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4130 transitions. [2021-06-05 03:18:39,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:39,095 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:39,095 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:39,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-06-05 03:18:39,095 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:39,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:39,096 INFO L82 PathProgramCache]: Analyzing trace with hash -781109324, now seen corresponding path program 167 times [2021-06-05 03:18:39,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:39,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241005094] [2021-06-05 03:18:39,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:39,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:39,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:39,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241005094] [2021-06-05 03:18:39,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241005094] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:39,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:39,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:18:39,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645369526] [2021-06-05 03:18:39,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 03:18:39,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:39,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 03:18:39,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:18:39,145 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 03:18:39,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:39,245 INFO L93 Difference]: Finished difference Result 1712 states and 4985 transitions. [2021-06-05 03:18:39,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 03:18:39,246 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 03:18:39,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:39,248 INFO L225 Difference]: With dead ends: 1712 [2021-06-05 03:18:39,248 INFO L226 Difference]: Without dead ends: 1615 [2021-06-05 03:18:39,248 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.5ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:18:39,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-06-05 03:18:39,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1488. [2021-06-05 03:18:39,262 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 03:18:39,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 4366 transitions. [2021-06-05 03:18:39,264 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 4366 transitions. Word has length 26 [2021-06-05 03:18:39,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:39,264 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 4366 transitions. [2021-06-05 03:18:39,264 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 03:18:39,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 4366 transitions. [2021-06-05 03:18:39,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:39,265 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:39,265 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 03:18:39,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-06-05 03:18:39,265 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:39,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:39,266 INFO L82 PathProgramCache]: Analyzing trace with hash 88335284, now seen corresponding path program 168 times [2021-06-05 03:18:39,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:39,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360579067] [2021-06-05 03:18:39,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:39,320 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 03:18:39,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:39,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360579067] [2021-06-05 03:18:39,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360579067] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:39,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:39,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:39,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483661329] [2021-06-05 03:18:39,320 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:39,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:39,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:39,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:39,321 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 03:18:39,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:39,449 INFO L93 Difference]: Finished difference Result 1769 states and 5133 transitions. [2021-06-05 03:18:39,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:39,449 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 03:18:39,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:39,451 INFO L225 Difference]: With dead ends: 1769 [2021-06-05 03:18:39,451 INFO L226 Difference]: Without dead ends: 1570 [2021-06-05 03:18:39,451 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 03:18:39,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2021-06-05 03:18:39,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1462. [2021-06-05 03:18:39,465 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 03:18:39,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 4276 transitions. [2021-06-05 03:18:39,467 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 4276 transitions. Word has length 26 [2021-06-05 03:18:39,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:39,467 INFO L482 AbstractCegarLoop]: Abstraction has 1462 states and 4276 transitions. [2021-06-05 03:18:39,467 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 03:18:39,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 4276 transitions. [2021-06-05 03:18:39,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:39,468 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:39,468 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:39,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-06-05 03:18:39,468 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:39,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:39,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1796117202, now seen corresponding path program 169 times [2021-06-05 03:18:39,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:39,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919418199] [2021-06-05 03:18:39,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:39,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:39,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:39,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919418199] [2021-06-05 03:18:39,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919418199] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:39,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:39,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:39,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923790742] [2021-06-05 03:18:39,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:39,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:39,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:39,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:39,517 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 03:18:39,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:39,648 INFO L93 Difference]: Finished difference Result 1668 states and 4808 transitions. [2021-06-05 03:18:39,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:39,649 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 03:18:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:39,651 INFO L225 Difference]: With dead ends: 1668 [2021-06-05 03:18:39,651 INFO L226 Difference]: Without dead ends: 1571 [2021-06-05 03:18:39,651 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:39,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2021-06-05 03:18:39,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1452. [2021-06-05 03:18:39,665 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 03:18:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 4251 transitions. [2021-06-05 03:18:39,667 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 4251 transitions. Word has length 26 [2021-06-05 03:18:39,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:39,667 INFO L482 AbstractCegarLoop]: Abstraction has 1452 states and 4251 transitions. [2021-06-05 03:18:39,667 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 03:18:39,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 4251 transitions. [2021-06-05 03:18:39,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:39,668 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:39,668 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:39,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-06-05 03:18:39,669 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:39,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:39,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1629405486, now seen corresponding path program 170 times [2021-06-05 03:18:39,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:39,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169238740] [2021-06-05 03:18:39,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:39,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:39,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:39,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169238740] [2021-06-05 03:18:39,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169238740] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:39,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:39,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:39,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426881151] [2021-06-05 03:18:39,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:39,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:39,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:39,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:39,735 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 03:18:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:39,905 INFO L93 Difference]: Finished difference Result 1677 states and 4834 transitions. [2021-06-05 03:18:39,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:39,905 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:39,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:39,907 INFO L225 Difference]: With dead ends: 1677 [2021-06-05 03:18:39,907 INFO L226 Difference]: Without dead ends: 1550 [2021-06-05 03:18:39,907 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 03:18:39,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2021-06-05 03:18:39,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1470. [2021-06-05 03:18:39,921 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 03:18:39,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4287 transitions. [2021-06-05 03:18:39,923 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4287 transitions. Word has length 26 [2021-06-05 03:18:39,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:39,923 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4287 transitions. [2021-06-05 03:18:39,923 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:39,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4287 transitions. [2021-06-05 03:18:39,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:39,924 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:39,924 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:39,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-06-05 03:18:39,924 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:39,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:39,925 INFO L82 PathProgramCache]: Analyzing trace with hash 623453304, now seen corresponding path program 171 times [2021-06-05 03:18:39,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:39,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260231036] [2021-06-05 03:18:39,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:39,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:39,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:39,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260231036] [2021-06-05 03:18:39,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260231036] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:39,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:39,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:39,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576644569] [2021-06-05 03:18:39,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:39,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:39,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:39,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:39,976 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 03:18:40,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:40,104 INFO L93 Difference]: Finished difference Result 1737 states and 5007 transitions. [2021-06-05 03:18:40,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:40,104 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 03:18:40,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:40,106 INFO L225 Difference]: With dead ends: 1737 [2021-06-05 03:18:40,106 INFO L226 Difference]: Without dead ends: 1622 [2021-06-05 03:18:40,106 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 03:18:40,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-06-05 03:18:40,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1476. [2021-06-05 03:18:40,120 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 03:18:40,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 4296 transitions. [2021-06-05 03:18:40,122 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 4296 transitions. Word has length 26 [2021-06-05 03:18:40,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:40,122 INFO L482 AbstractCegarLoop]: Abstraction has 1476 states and 4296 transitions. [2021-06-05 03:18:40,122 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 03:18:40,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 4296 transitions. [2021-06-05 03:18:40,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:40,123 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:40,123 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:40,124 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-06-05 03:18:40,124 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:40,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:40,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1210004152, now seen corresponding path program 172 times [2021-06-05 03:18:40,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:40,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982052051] [2021-06-05 03:18:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:40,182 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 03:18:40,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:40,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982052051] [2021-06-05 03:18:40,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982052051] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:40,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:40,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:40,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477551935] [2021-06-05 03:18:40,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:40,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:40,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:40,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:40,183 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 03:18:40,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:40,344 INFO L93 Difference]: Finished difference Result 1779 states and 5100 transitions. [2021-06-05 03:18:40,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:40,344 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:40,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:40,347 INFO L225 Difference]: With dead ends: 1779 [2021-06-05 03:18:40,347 INFO L226 Difference]: Without dead ends: 1623 [2021-06-05 03:18:40,347 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 03:18:40,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2021-06-05 03:18:40,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1498. [2021-06-05 03:18:40,361 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 03:18:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 4362 transitions. [2021-06-05 03:18:40,364 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 4362 transitions. Word has length 26 [2021-06-05 03:18:40,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:40,364 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 4362 transitions. [2021-06-05 03:18:40,364 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:40,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 4362 transitions. [2021-06-05 03:18:40,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:40,366 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:40,366 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:40,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-06-05 03:18:40,366 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:40,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:40,366 INFO L82 PathProgramCache]: Analyzing trace with hash 497936310, now seen corresponding path program 173 times [2021-06-05 03:18:40,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:40,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355499425] [2021-06-05 03:18:40,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:40,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:40,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:40,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355499425] [2021-06-05 03:18:40,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355499425] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:40,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:40,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:40,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035799182] [2021-06-05 03:18:40,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:40,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:40,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:40,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:40,424 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 03:18:40,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:40,584 INFO L93 Difference]: Finished difference Result 1823 states and 5246 transitions. [2021-06-05 03:18:40,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:40,584 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 03:18:40,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:40,586 INFO L225 Difference]: With dead ends: 1823 [2021-06-05 03:18:40,586 INFO L226 Difference]: Without dead ends: 1667 [2021-06-05 03:18:40,586 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:40,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2021-06-05 03:18:40,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1522. [2021-06-05 03:18:40,600 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 03:18:40,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 4433 transitions. [2021-06-05 03:18:40,602 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 4433 transitions. Word has length 26 [2021-06-05 03:18:40,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:40,602 INFO L482 AbstractCegarLoop]: Abstraction has 1522 states and 4433 transitions. [2021-06-05 03:18:40,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:40,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 4433 transitions. [2021-06-05 03:18:40,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:40,604 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:40,604 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 03:18:40,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-06-05 03:18:40,604 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:40,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:40,604 INFO L82 PathProgramCache]: Analyzing trace with hash -465295700, now seen corresponding path program 174 times [2021-06-05 03:18:40,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:40,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096727783] [2021-06-05 03:18:40,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:40,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:40,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096727783] [2021-06-05 03:18:40,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096727783] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:40,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:40,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:40,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141327873] [2021-06-05 03:18:40,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:40,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:40,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:40,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:40,651 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 03:18:40,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:40,774 INFO L93 Difference]: Finished difference Result 1900 states and 5461 transitions. [2021-06-05 03:18:40,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:40,775 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 03:18:40,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:40,777 INFO L225 Difference]: With dead ends: 1900 [2021-06-05 03:18:40,777 INFO L226 Difference]: Without dead ends: 1636 [2021-06-05 03:18:40,777 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:40,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-06-05 03:18:40,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1508. [2021-06-05 03:18:40,791 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 03:18:40,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 4358 transitions. [2021-06-05 03:18:40,793 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 4358 transitions. Word has length 26 [2021-06-05 03:18:40,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:40,793 INFO L482 AbstractCegarLoop]: Abstraction has 1508 states and 4358 transitions. [2021-06-05 03:18:40,793 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 03:18:40,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 4358 transitions. [2021-06-05 03:18:40,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:40,794 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:40,794 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 03:18:40,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-06-05 03:18:40,794 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:40,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:40,795 INFO L82 PathProgramCache]: Analyzing trace with hash -2044727346, now seen corresponding path program 175 times [2021-06-05 03:18:40,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:40,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496244450] [2021-06-05 03:18:40,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:40,858 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 03:18:40,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:40,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496244450] [2021-06-05 03:18:40,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496244450] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:40,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:40,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:40,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017119915] [2021-06-05 03:18:40,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:40,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:40,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:40,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:40,859 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 03:18:41,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:41,022 INFO L93 Difference]: Finished difference Result 1766 states and 4965 transitions. [2021-06-05 03:18:41,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:41,022 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:41,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:41,024 INFO L225 Difference]: With dead ends: 1766 [2021-06-05 03:18:41,024 INFO L226 Difference]: Without dead ends: 1508 [2021-06-05 03:18:41,024 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:41,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2021-06-05 03:18:41,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1438. [2021-06-05 03:18:41,037 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 03:18:41,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4077 transitions. [2021-06-05 03:18:41,039 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4077 transitions. Word has length 26 [2021-06-05 03:18:41,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:41,039 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4077 transitions. [2021-06-05 03:18:41,039 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:41,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4077 transitions. [2021-06-05 03:18:41,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:41,040 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:41,040 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:41,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-06-05 03:18:41,040 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:41,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:41,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1066489600, now seen corresponding path program 176 times [2021-06-05 03:18:41,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:41,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317107722] [2021-06-05 03:18:41,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:41,102 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 03:18:41,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:41,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317107722] [2021-06-05 03:18:41,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317107722] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:41,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:41,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:41,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809747767] [2021-06-05 03:18:41,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:41,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:41,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:41,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:41,103 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 03:18:41,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:41,264 INFO L93 Difference]: Finished difference Result 1656 states and 4633 transitions. [2021-06-05 03:18:41,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:41,264 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:41,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:41,266 INFO L225 Difference]: With dead ends: 1656 [2021-06-05 03:18:41,266 INFO L226 Difference]: Without dead ends: 1505 [2021-06-05 03:18:41,266 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 03:18:41,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-06-05 03:18:41,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1438. [2021-06-05 03:18:41,279 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 03:18:41,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4065 transitions. [2021-06-05 03:18:41,280 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4065 transitions. Word has length 26 [2021-06-05 03:18:41,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:41,281 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4065 transitions. [2021-06-05 03:18:41,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:41,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4065 transitions. [2021-06-05 03:18:41,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:41,282 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:41,282 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:41,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-06-05 03:18:41,282 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:41,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:41,282 INFO L82 PathProgramCache]: Analyzing trace with hash -479938752, now seen corresponding path program 177 times [2021-06-05 03:18:41,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:41,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120118940] [2021-06-05 03:18:41,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:41,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:41,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:41,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120118940] [2021-06-05 03:18:41,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120118940] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:41,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:41,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:41,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277279111] [2021-06-05 03:18:41,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:41,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:41,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:41,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:41,356 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 03:18:41,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:41,520 INFO L93 Difference]: Finished difference Result 1661 states and 4643 transitions. [2021-06-05 03:18:41,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:41,521 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:41,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:41,522 INFO L225 Difference]: With dead ends: 1661 [2021-06-05 03:18:41,523 INFO L226 Difference]: Without dead ends: 1541 [2021-06-05 03:18:41,523 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 03:18:41,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2021-06-05 03:18:41,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1464. [2021-06-05 03:18:41,536 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 03:18:41,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4141 transitions. [2021-06-05 03:18:41,537 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4141 transitions. Word has length 26 [2021-06-05 03:18:41,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:41,538 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 4141 transitions. [2021-06-05 03:18:41,538 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 03:18:41,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4141 transitions. [2021-06-05 03:18:41,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:41,539 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:41,539 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 03:18:41,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-06-05 03:18:41,539 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:41,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:41,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1192006594, now seen corresponding path program 178 times [2021-06-05 03:18:41,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:41,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812182560] [2021-06-05 03:18:41,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:41,596 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 03:18:41,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:41,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812182560] [2021-06-05 03:18:41,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812182560] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:41,597 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:41,597 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:41,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531757651] [2021-06-05 03:18:41,597 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:41,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:41,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:41,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:41,597 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 03:18:41,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:41,758 INFO L93 Difference]: Finished difference Result 1719 states and 4756 transitions. [2021-06-05 03:18:41,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:41,758 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:41,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:41,760 INFO L225 Difference]: With dead ends: 1719 [2021-06-05 03:18:41,760 INFO L226 Difference]: Without dead ends: 1599 [2021-06-05 03:18:41,760 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:41,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2021-06-05 03:18:41,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1456. [2021-06-05 03:18:41,773 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 03:18:41,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 4120 transitions. [2021-06-05 03:18:41,775 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 4120 transitions. Word has length 26 [2021-06-05 03:18:41,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:41,775 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 4120 transitions. [2021-06-05 03:18:41,775 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:41,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 4120 transitions. [2021-06-05 03:18:41,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:41,776 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:41,776 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:41,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-06-05 03:18:41,777 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:41,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:41,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1037569076, now seen corresponding path program 179 times [2021-06-05 03:18:41,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:41,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007301] [2021-06-05 03:18:41,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:41,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:41,834 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:41,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007301] [2021-06-05 03:18:41,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007301] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:41,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:41,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:41,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588958126] [2021-06-05 03:18:41,834 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:41,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:41,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:41,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:41,835 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 03:18:42,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:42,000 INFO L93 Difference]: Finished difference Result 1748 states and 4846 transitions. [2021-06-05 03:18:42,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:42,000 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:42,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:42,002 INFO L225 Difference]: With dead ends: 1748 [2021-06-05 03:18:42,002 INFO L226 Difference]: Without dead ends: 1524 [2021-06-05 03:18:42,002 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:42,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-06-05 03:18:42,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1396. [2021-06-05 03:18:42,014 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 03:18:42,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3950 transitions. [2021-06-05 03:18:42,016 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3950 transitions. Word has length 26 [2021-06-05 03:18:42,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:42,016 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 3950 transitions. [2021-06-05 03:18:42,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:42,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3950 transitions. [2021-06-05 03:18:42,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:42,017 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:42,017 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:42,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-06-05 03:18:42,018 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:42,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:42,018 INFO L82 PathProgramCache]: Analyzing trace with hash 538943446, now seen corresponding path program 180 times [2021-06-05 03:18:42,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:42,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135481145] [2021-06-05 03:18:42,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:42,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:42,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135481145] [2021-06-05 03:18:42,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135481145] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:42,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:42,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:42,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519815968] [2021-06-05 03:18:42,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:42,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:42,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:42,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:42,066 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 03:18:42,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:42,194 INFO L93 Difference]: Finished difference Result 1674 states and 4682 transitions. [2021-06-05 03:18:42,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:42,195 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 03:18:42,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:42,197 INFO L225 Difference]: With dead ends: 1674 [2021-06-05 03:18:42,197 INFO L226 Difference]: Without dead ends: 1589 [2021-06-05 03:18:42,197 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:42,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2021-06-05 03:18:42,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1426. [2021-06-05 03:18:42,210 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 03:18:42,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4032 transitions. [2021-06-05 03:18:42,212 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4032 transitions. Word has length 26 [2021-06-05 03:18:42,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:42,212 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 4032 transitions. [2021-06-05 03:18:42,212 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 03:18:42,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4032 transitions. [2021-06-05 03:18:42,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:42,213 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:42,213 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:42,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-06-05 03:18:42,213 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:42,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:42,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1408388054, now seen corresponding path program 181 times [2021-06-05 03:18:42,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:42,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392753484] [2021-06-05 03:18:42,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:42,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:42,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:42,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392753484] [2021-06-05 03:18:42,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392753484] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:42,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:42,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:42,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169178332] [2021-06-05 03:18:42,273 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:42,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:42,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:42,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:42,273 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 03:18:42,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:42,433 INFO L93 Difference]: Finished difference Result 1703 states and 4751 transitions. [2021-06-05 03:18:42,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:42,434 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:42,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:42,436 INFO L225 Difference]: With dead ends: 1703 [2021-06-05 03:18:42,436 INFO L226 Difference]: Without dead ends: 1516 [2021-06-05 03:18:42,436 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:42,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-06-05 03:18:42,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1388. [2021-06-05 03:18:42,448 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 03:18:42,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 3911 transitions. [2021-06-05 03:18:42,450 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 3911 transitions. Word has length 26 [2021-06-05 03:18:42,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:42,450 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 3911 transitions. [2021-06-05 03:18:42,450 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 03:18:42,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 3911 transitions. [2021-06-05 03:18:42,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:42,451 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:42,451 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 03:18:42,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-06-05 03:18:42,451 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:42,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:42,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1178797324, now seen corresponding path program 182 times [2021-06-05 03:18:42,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:42,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282528336] [2021-06-05 03:18:42,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:42,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:42,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282528336] [2021-06-05 03:18:42,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282528336] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:42,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:42,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:42,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481218657] [2021-06-05 03:18:42,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:42,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:42,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:42,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:42,523 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 03:18:42,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:42,685 INFO L93 Difference]: Finished difference Result 1583 states and 4394 transitions. [2021-06-05 03:18:42,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:42,685 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:42,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:42,687 INFO L225 Difference]: With dead ends: 1583 [2021-06-05 03:18:42,687 INFO L226 Difference]: Without dead ends: 1498 [2021-06-05 03:18:42,687 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 03:18:42,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-06-05 03:18:42,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1378. [2021-06-05 03:18:42,699 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 03:18:42,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 3890 transitions. [2021-06-05 03:18:42,701 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 3890 transitions. Word has length 26 [2021-06-05 03:18:42,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:42,701 INFO L482 AbstractCegarLoop]: Abstraction has 1378 states and 3890 transitions. [2021-06-05 03:18:42,701 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 03:18:42,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 3890 transitions. [2021-06-05 03:18:42,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:42,703 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:42,703 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:42,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-06-05 03:18:42,703 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:42,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:42,703 INFO L82 PathProgramCache]: Analyzing trace with hash -309352716, now seen corresponding path program 183 times [2021-06-05 03:18:42,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:42,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689815971] [2021-06-05 03:18:42,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:42,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:42,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:42,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689815971] [2021-06-05 03:18:42,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689815971] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:42,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:42,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:42,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340306208] [2021-06-05 03:18:42,766 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:42,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:42,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:42,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:42,767 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 03:18:42,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:42,932 INFO L93 Difference]: Finished difference Result 1537 states and 4286 transitions. [2021-06-05 03:18:42,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:42,932 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:42,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:42,934 INFO L225 Difference]: With dead ends: 1537 [2021-06-05 03:18:42,934 INFO L226 Difference]: Without dead ends: 1442 [2021-06-05 03:18:42,934 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:42,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2021-06-05 03:18:42,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1390. [2021-06-05 03:18:42,946 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 03:18:42,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 3916 transitions. [2021-06-05 03:18:42,948 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 3916 transitions. Word has length 26 [2021-06-05 03:18:42,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:42,948 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 3916 transitions. [2021-06-05 03:18:42,948 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 03:18:42,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 3916 transitions. [2021-06-05 03:18:42,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:42,949 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:42,949 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:42,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-06-05 03:18:42,949 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:42,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:42,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1943506074, now seen corresponding path program 184 times [2021-06-05 03:18:42,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:42,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093165063] [2021-06-05 03:18:42,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:43,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:43,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093165063] [2021-06-05 03:18:43,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093165063] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:43,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:43,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:43,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388790452] [2021-06-05 03:18:43,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:43,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:43,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:43,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:43,002 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 03:18:43,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:43,139 INFO L93 Difference]: Finished difference Result 1645 states and 4600 transitions. [2021-06-05 03:18:43,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:43,140 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 03:18:43,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:43,142 INFO L225 Difference]: With dead ends: 1645 [2021-06-05 03:18:43,142 INFO L226 Difference]: Without dead ends: 1562 [2021-06-05 03:18:43,142 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:43,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-06-05 03:18:43,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1396. [2021-06-05 03:18:43,154 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 03:18:43,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3925 transitions. [2021-06-05 03:18:43,156 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3925 transitions. Word has length 26 [2021-06-05 03:18:43,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:43,156 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 3925 transitions. [2021-06-05 03:18:43,156 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 03:18:43,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3925 transitions. [2021-06-05 03:18:43,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:43,157 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:43,158 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 03:18:43,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-06-05 03:18:43,158 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:43,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:43,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1764910374, now seen corresponding path program 185 times [2021-06-05 03:18:43,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:43,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835321074] [2021-06-05 03:18:43,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:43,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:43,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835321074] [2021-06-05 03:18:43,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835321074] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:43,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:43,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:43,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546683298] [2021-06-05 03:18:43,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:43,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:43,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:43,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:43,218 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 03:18:43,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:43,385 INFO L93 Difference]: Finished difference Result 1543 states and 4300 transitions. [2021-06-05 03:18:43,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:43,385 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:43,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:43,387 INFO L225 Difference]: With dead ends: 1543 [2021-06-05 03:18:43,387 INFO L226 Difference]: Without dead ends: 1455 [2021-06-05 03:18:43,387 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:43,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-06-05 03:18:43,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1392. [2021-06-05 03:18:43,399 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 03:18:43,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 3919 transitions. [2021-06-05 03:18:43,401 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 3919 transitions. Word has length 26 [2021-06-05 03:18:43,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:43,401 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 3919 transitions. [2021-06-05 03:18:43,401 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:43,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 3919 transitions. [2021-06-05 03:18:43,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:43,403 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:43,403 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:43,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-06-05 03:18:43,403 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:43,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:43,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1817989080, now seen corresponding path program 186 times [2021-06-05 03:18:43,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:43,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293812528] [2021-06-05 03:18:43,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:43,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:43,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293812528] [2021-06-05 03:18:43,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293812528] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:43,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:43,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:43,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659105394] [2021-06-05 03:18:43,462 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:43,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:43,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:43,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:43,462 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 03:18:43,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:43,631 INFO L93 Difference]: Finished difference Result 1684 states and 4690 transitions. [2021-06-05 03:18:43,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:43,631 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:43,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:43,633 INFO L225 Difference]: With dead ends: 1684 [2021-06-05 03:18:43,633 INFO L226 Difference]: Without dead ends: 1596 [2021-06-05 03:18:43,633 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:43,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2021-06-05 03:18:43,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1416. [2021-06-05 03:18:43,647 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 03:18:43,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 3990 transitions. [2021-06-05 03:18:43,648 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 3990 transitions. Word has length 26 [2021-06-05 03:18:43,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:43,649 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 3990 transitions. [2021-06-05 03:18:43,649 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 03:18:43,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 3990 transitions. [2021-06-05 03:18:43,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:43,650 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:43,650 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 03:18:43,650 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-06-05 03:18:43,650 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:43,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:43,650 INFO L82 PathProgramCache]: Analyzing trace with hash 854757070, now seen corresponding path program 187 times [2021-06-05 03:18:43,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:43,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797628234] [2021-06-05 03:18:43,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:43,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:43,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:43,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797628234] [2021-06-05 03:18:43,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797628234] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:43,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:43,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:43,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537626206] [2021-06-05 03:18:43,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:43,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:43,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:43,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:43,702 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 03:18:43,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:43,832 INFO L93 Difference]: Finished difference Result 1704 states and 4749 transitions. [2021-06-05 03:18:43,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:43,832 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 03:18:43,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:43,834 INFO L225 Difference]: With dead ends: 1704 [2021-06-05 03:18:43,834 INFO L226 Difference]: Without dead ends: 1544 [2021-06-05 03:18:43,835 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 03:18:43,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-06-05 03:18:43,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1404. [2021-06-05 03:18:43,847 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 03:18:43,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 3956 transitions. [2021-06-05 03:18:43,849 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 3956 transitions. Word has length 26 [2021-06-05 03:18:43,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:43,849 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 3956 transitions. [2021-06-05 03:18:43,849 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 03:18:43,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 3956 transitions. [2021-06-05 03:18:43,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:43,850 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:43,850 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 03:18:43,850 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-06-05 03:18:43,851 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:43,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:43,851 INFO L82 PathProgramCache]: Analyzing trace with hash -724674576, now seen corresponding path program 188 times [2021-06-05 03:18:43,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:43,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366167947] [2021-06-05 03:18:43,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:43,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:43,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:43,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366167947] [2021-06-05 03:18:43,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366167947] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:43,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:43,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:43,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975380250] [2021-06-05 03:18:43,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:43,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:43,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:43,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:43,915 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 03:18:44,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:44,083 INFO L93 Difference]: Finished difference Result 1611 states and 4453 transitions. [2021-06-05 03:18:44,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:44,084 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:44,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:44,086 INFO L225 Difference]: With dead ends: 1611 [2021-06-05 03:18:44,086 INFO L226 Difference]: Without dead ends: 1492 [2021-06-05 03:18:44,086 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 03:18:44,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-06-05 03:18:44,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1394. [2021-06-05 03:18:44,121 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 03:18:44,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 3934 transitions. [2021-06-05 03:18:44,122 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 3934 transitions. Word has length 26 [2021-06-05 03:18:44,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:44,123 INFO L482 AbstractCegarLoop]: Abstraction has 1394 states and 3934 transitions. [2021-06-05 03:18:44,123 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:44,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 3934 transitions. [2021-06-05 03:18:44,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:44,124 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:44,124 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:44,124 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-06-05 03:18:44,124 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:44,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:44,124 INFO L82 PathProgramCache]: Analyzing trace with hash -903833710, now seen corresponding path program 189 times [2021-06-05 03:18:44,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:44,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946880925] [2021-06-05 03:18:44,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:44,181 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 03:18:44,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:44,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946880925] [2021-06-05 03:18:44,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946880925] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:44,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:44,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:44,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620904945] [2021-06-05 03:18:44,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:44,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:44,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:44,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:44,182 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 03:18:44,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:44,350 INFO L93 Difference]: Finished difference Result 1557 states and 4341 transitions. [2021-06-05 03:18:44,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:44,350 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:44,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:44,352 INFO L225 Difference]: With dead ends: 1557 [2021-06-05 03:18:44,352 INFO L226 Difference]: Without dead ends: 1472 [2021-06-05 03:18:44,352 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:44,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-06-05 03:18:44,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1396. [2021-06-05 03:18:44,364 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 03:18:44,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3942 transitions. [2021-06-05 03:18:44,366 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3942 transitions. Word has length 26 [2021-06-05 03:18:44,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:44,366 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 3942 transitions. [2021-06-05 03:18:44,366 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 03:18:44,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3942 transitions. [2021-06-05 03:18:44,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:44,368 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:44,368 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:44,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-06-05 03:18:44,368 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:44,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:44,368 INFO L82 PathProgramCache]: Analyzing trace with hash -34389102, now seen corresponding path program 190 times [2021-06-05 03:18:44,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:44,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737169306] [2021-06-05 03:18:44,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:44,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:44,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737169306] [2021-06-05 03:18:44,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737169306] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:44,426 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:44,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:44,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911443309] [2021-06-05 03:18:44,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:44,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:44,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:44,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:44,427 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 03:18:44,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:44,606 INFO L93 Difference]: Finished difference Result 1544 states and 4317 transitions. [2021-06-05 03:18:44,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:44,606 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 03:18:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:44,608 INFO L225 Difference]: With dead ends: 1544 [2021-06-05 03:18:44,608 INFO L226 Difference]: Without dead ends: 1449 [2021-06-05 03:18:44,608 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:44,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2021-06-05 03:18:44,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1400. [2021-06-05 03:18:44,621 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 03:18:44,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3955 transitions. [2021-06-05 03:18:44,622 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3955 transitions. Word has length 26 [2021-06-05 03:18:44,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:44,623 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3955 transitions. [2021-06-05 03:18:44,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:44,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3955 transitions. [2021-06-05 03:18:44,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:44,624 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:44,624 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 03:18:44,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-06-05 03:18:44,624 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:44,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:44,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1503100332, now seen corresponding path program 191 times [2021-06-05 03:18:44,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:44,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344194573] [2021-06-05 03:18:44,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:44,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:44,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:44,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344194573] [2021-06-05 03:18:44,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344194573] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:44,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:44,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:44,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324932031] [2021-06-05 03:18:44,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:44,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:44,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:44,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:44,686 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 03:18:44,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:44,853 INFO L93 Difference]: Finished difference Result 1551 states and 4333 transitions. [2021-06-05 03:18:44,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:44,854 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:44,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:44,855 INFO L225 Difference]: With dead ends: 1551 [2021-06-05 03:18:44,856 INFO L226 Difference]: Without dead ends: 1466 [2021-06-05 03:18:44,856 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 03:18:44,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-06-05 03:18:44,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1398. [2021-06-05 03:18:44,868 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 03:18:44,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 3948 transitions. [2021-06-05 03:18:44,870 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 3948 transitions. Word has length 26 [2021-06-05 03:18:44,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:44,870 INFO L482 AbstractCegarLoop]: Abstraction has 1398 states and 3948 transitions. [2021-06-05 03:18:44,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:44,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 3948 transitions. [2021-06-05 03:18:44,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:44,871 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:44,871 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:44,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-06-05 03:18:44,871 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:44,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:44,872 INFO L82 PathProgramCache]: Analyzing trace with hash -2076497608, now seen corresponding path program 192 times [2021-06-05 03:18:44,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:44,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45278141] [2021-06-05 03:18:44,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:44,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:44,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:44,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45278141] [2021-06-05 03:18:44,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45278141] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:44,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:44,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:44,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977510320] [2021-06-05 03:18:44,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:44,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:44,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:44,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:44,937 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 03:18:45,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:45,120 INFO L93 Difference]: Finished difference Result 1561 states and 4348 transitions. [2021-06-05 03:18:45,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:45,120 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:45,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:45,122 INFO L225 Difference]: With dead ends: 1561 [2021-06-05 03:18:45,122 INFO L226 Difference]: Without dead ends: 1478 [2021-06-05 03:18:45,122 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 03:18:45,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2021-06-05 03:18:45,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1398. [2021-06-05 03:18:45,135 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 03:18:45,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 3946 transitions. [2021-06-05 03:18:45,136 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 3946 transitions. Word has length 26 [2021-06-05 03:18:45,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:45,137 INFO L482 AbstractCegarLoop]: Abstraction has 1398 states and 3946 transitions. [2021-06-05 03:18:45,137 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 03:18:45,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 3946 transitions. [2021-06-05 03:18:45,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:45,138 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:45,138 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:45,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-06-05 03:18:45,138 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:45,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:45,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1489946760, now seen corresponding path program 193 times [2021-06-05 03:18:45,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:45,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577444725] [2021-06-05 03:18:45,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:45,199 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:45,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577444725] [2021-06-05 03:18:45,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577444725] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:45,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:45,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:45,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159081627] [2021-06-05 03:18:45,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:45,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:45,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:45,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:45,200 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 03:18:45,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:45,374 INFO L93 Difference]: Finished difference Result 1541 states and 4312 transitions. [2021-06-05 03:18:45,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:45,374 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:45,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:45,376 INFO L225 Difference]: With dead ends: 1541 [2021-06-05 03:18:45,376 INFO L226 Difference]: Without dead ends: 1453 [2021-06-05 03:18:45,376 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 03:18:45,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-05 03:18:45,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1399. [2021-06-05 03:18:45,388 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 03:18:45,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 3950 transitions. [2021-06-05 03:18:45,390 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 3950 transitions. Word has length 26 [2021-06-05 03:18:45,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:45,390 INFO L482 AbstractCegarLoop]: Abstraction has 1399 states and 3950 transitions. [2021-06-05 03:18:45,390 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 03:18:45,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 3950 transitions. [2021-06-05 03:18:45,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:45,392 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:45,392 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:45,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-06-05 03:18:45,392 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:45,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:45,392 INFO L82 PathProgramCache]: Analyzing trace with hash 2092952694, now seen corresponding path program 194 times [2021-06-05 03:18:45,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:45,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584265969] [2021-06-05 03:18:45,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:45,449 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 03:18:45,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:45,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584265969] [2021-06-05 03:18:45,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584265969] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:45,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:45,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:45,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790955654] [2021-06-05 03:18:45,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:45,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:45,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:45,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:45,450 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 03:18:45,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:45,621 INFO L93 Difference]: Finished difference Result 1549 states and 4315 transitions. [2021-06-05 03:18:45,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:45,621 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:45,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:45,623 INFO L225 Difference]: With dead ends: 1549 [2021-06-05 03:18:45,623 INFO L226 Difference]: Without dead ends: 1461 [2021-06-05 03:18:45,623 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:45,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-06-05 03:18:45,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1400. [2021-06-05 03:18:45,635 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 03:18:45,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3955 transitions. [2021-06-05 03:18:45,637 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3955 transitions. Word has length 26 [2021-06-05 03:18:45,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:45,637 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3955 transitions. [2021-06-05 03:18:45,637 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:45,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3955 transitions. [2021-06-05 03:18:45,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:45,639 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:45,639 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:45,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-06-05 03:18:45,639 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:45,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:45,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1110641676, now seen corresponding path program 195 times [2021-06-05 03:18:45,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:45,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039069624] [2021-06-05 03:18:45,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:45,710 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 03:18:45,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:45,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039069624] [2021-06-05 03:18:45,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039069624] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:45,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:45,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:45,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661529113] [2021-06-05 03:18:45,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:45,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:45,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:45,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:45,711 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 03:18:45,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:45,877 INFO L93 Difference]: Finished difference Result 1607 states and 4488 transitions. [2021-06-05 03:18:45,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:45,877 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:45,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:45,879 INFO L225 Difference]: With dead ends: 1607 [2021-06-05 03:18:45,879 INFO L226 Difference]: Without dead ends: 1522 [2021-06-05 03:18:45,879 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:45,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-06-05 03:18:45,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1400. [2021-06-05 03:18:45,892 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 03:18:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3955 transitions. [2021-06-05 03:18:45,894 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3955 transitions. Word has length 26 [2021-06-05 03:18:45,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:45,894 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3955 transitions. [2021-06-05 03:18:45,894 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3955 transitions. [2021-06-05 03:18:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:45,895 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:45,895 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:45,895 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-06-05 03:18:45,895 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:45,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:45,895 INFO L82 PathProgramCache]: Analyzing trace with hash -241197068, now seen corresponding path program 196 times [2021-06-05 03:18:45,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:45,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619044442] [2021-06-05 03:18:45,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:45,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:45,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:45,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619044442] [2021-06-05 03:18:45,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619044442] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:45,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:45,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:45,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171382712] [2021-06-05 03:18:45,959 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:45,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:45,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:45,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:45,960 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 03:18:46,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:46,129 INFO L93 Difference]: Finished difference Result 1617 states and 4532 transitions. [2021-06-05 03:18:46,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:46,130 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:46,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:46,132 INFO L225 Difference]: With dead ends: 1617 [2021-06-05 03:18:46,132 INFO L226 Difference]: Without dead ends: 1522 [2021-06-05 03:18:46,132 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:46,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-06-05 03:18:46,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1407. [2021-06-05 03:18:46,144 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 03:18:46,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 3972 transitions. [2021-06-05 03:18:46,146 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 3972 transitions. Word has length 26 [2021-06-05 03:18:46,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:46,146 INFO L482 AbstractCegarLoop]: Abstraction has 1407 states and 3972 transitions. [2021-06-05 03:18:46,146 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 03:18:46,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 3972 transitions. [2021-06-05 03:18:46,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:46,148 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:46,148 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:46,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-06-05 03:18:46,148 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:46,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:46,148 INFO L82 PathProgramCache]: Analyzing trace with hash -495542802, now seen corresponding path program 197 times [2021-06-05 03:18:46,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:46,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944450631] [2021-06-05 03:18:46,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:46,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:46,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944450631] [2021-06-05 03:18:46,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944450631] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:46,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:46,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:46,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216259059] [2021-06-05 03:18:46,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:46,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:46,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:46,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:46,206 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 03:18:46,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:46,374 INFO L93 Difference]: Finished difference Result 1602 states and 4492 transitions. [2021-06-05 03:18:46,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:46,375 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:46,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:46,377 INFO L225 Difference]: With dead ends: 1602 [2021-06-05 03:18:46,377 INFO L226 Difference]: Without dead ends: 1502 [2021-06-05 03:18:46,377 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:46,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-06-05 03:18:46,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1405. [2021-06-05 03:18:46,389 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 03:18:46,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 3969 transitions. [2021-06-05 03:18:46,391 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 3969 transitions. Word has length 26 [2021-06-05 03:18:46,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:46,391 INFO L482 AbstractCegarLoop]: Abstraction has 1405 states and 3969 transitions. [2021-06-05 03:18:46,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:46,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 3969 transitions. [2021-06-05 03:18:46,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:46,392 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:46,392 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:46,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-06-05 03:18:46,392 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:46,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:46,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1813146598, now seen corresponding path program 198 times [2021-06-05 03:18:46,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:46,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006832808] [2021-06-05 03:18:46,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:46,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:46,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:46,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006832808] [2021-06-05 03:18:46,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006832808] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:46,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:46,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:46,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981836853] [2021-06-05 03:18:46,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:46,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:46,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:46,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:46,445 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 03:18:46,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:46,606 INFO L93 Difference]: Finished difference Result 1611 states and 4507 transitions. [2021-06-05 03:18:46,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:46,607 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 03:18:46,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:46,609 INFO L225 Difference]: With dead ends: 1611 [2021-06-05 03:18:46,609 INFO L226 Difference]: Without dead ends: 1524 [2021-06-05 03:18:46,609 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:46,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-06-05 03:18:46,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1406. [2021-06-05 03:18:46,622 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 03:18:46,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 3972 transitions. [2021-06-05 03:18:46,624 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 3972 transitions. Word has length 26 [2021-06-05 03:18:46,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:46,624 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 3972 transitions. [2021-06-05 03:18:46,624 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 03:18:46,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 3972 transitions. [2021-06-05 03:18:46,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:46,626 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:46,626 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:46,626 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-06-05 03:18:46,626 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:46,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:46,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1741697498, now seen corresponding path program 199 times [2021-06-05 03:18:46,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:46,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893533121] [2021-06-05 03:18:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:46,697 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 03:18:46,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:46,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893533121] [2021-06-05 03:18:46,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893533121] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:46,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:46,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:46,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714717729] [2021-06-05 03:18:46,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:46,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:46,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:46,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:46,698 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 03:18:46,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:46,865 INFO L93 Difference]: Finished difference Result 1550 states and 4346 transitions. [2021-06-05 03:18:46,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:46,866 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:46,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:46,867 INFO L225 Difference]: With dead ends: 1550 [2021-06-05 03:18:46,867 INFO L226 Difference]: Without dead ends: 1462 [2021-06-05 03:18:46,868 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 03:18:46,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-06-05 03:18:46,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1408. [2021-06-05 03:18:46,880 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 03:18:46,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 3979 transitions. [2021-06-05 03:18:46,882 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 3979 transitions. Word has length 26 [2021-06-05 03:18:46,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:46,882 INFO L482 AbstractCegarLoop]: Abstraction has 1408 states and 3979 transitions. [2021-06-05 03:18:46,882 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:46,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 3979 transitions. [2021-06-05 03:18:46,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:46,883 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:46,884 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:46,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-06-05 03:18:46,884 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:46,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:46,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1029629656, now seen corresponding path program 200 times [2021-06-05 03:18:46,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:46,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646498213] [2021-06-05 03:18:46,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:46,939 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 03:18:46,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:46,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646498213] [2021-06-05 03:18:46,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646498213] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:46,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:46,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:46,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891654079] [2021-06-05 03:18:46,939 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:46,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:46,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:46,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:46,940 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 03:18:47,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:47,109 INFO L93 Difference]: Finished difference Result 1554 states and 4338 transitions. [2021-06-05 03:18:47,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:47,109 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:47,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:47,111 INFO L225 Difference]: With dead ends: 1554 [2021-06-05 03:18:47,111 INFO L226 Difference]: Without dead ends: 1468 [2021-06-05 03:18:47,111 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:47,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2021-06-05 03:18:47,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1407. [2021-06-05 03:18:47,124 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 03:18:47,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 3972 transitions. [2021-06-05 03:18:47,125 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 3972 transitions. Word has length 26 [2021-06-05 03:18:47,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:47,126 INFO L482 AbstractCegarLoop]: Abstraction has 1407 states and 3972 transitions. [2021-06-05 03:18:47,126 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 03:18:47,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 3972 transitions. [2021-06-05 03:18:47,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:47,127 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:47,127 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 03:18:47,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-06-05 03:18:47,127 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:47,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:47,128 INFO L82 PathProgramCache]: Analyzing trace with hash 349552952, now seen corresponding path program 201 times [2021-06-05 03:18:47,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:47,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817251470] [2021-06-05 03:18:47,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:47,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:47,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:47,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817251470] [2021-06-05 03:18:47,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817251470] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:47,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:47,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:47,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977837131] [2021-06-05 03:18:47,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:47,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:47,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:47,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:47,187 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 03:18:47,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:47,355 INFO L93 Difference]: Finished difference Result 1620 states and 4536 transitions. [2021-06-05 03:18:47,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:47,356 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:47,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:47,358 INFO L225 Difference]: With dead ends: 1620 [2021-06-05 03:18:47,358 INFO L226 Difference]: Without dead ends: 1523 [2021-06-05 03:18:47,358 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 03:18:47,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-06-05 03:18:47,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1419. [2021-06-05 03:18:47,370 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 03:18:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 4001 transitions. [2021-06-05 03:18:47,372 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 4001 transitions. Word has length 26 [2021-06-05 03:18:47,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:47,372 INFO L482 AbstractCegarLoop]: Abstraction has 1419 states and 4001 transitions. [2021-06-05 03:18:47,372 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:47,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 4001 transitions. [2021-06-05 03:18:47,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:47,374 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:47,374 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:47,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-06-05 03:18:47,374 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:47,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:47,374 INFO L82 PathProgramCache]: Analyzing trace with hash 939870006, now seen corresponding path program 202 times [2021-06-05 03:18:47,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:47,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326417509] [2021-06-05 03:18:47,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:47,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:47,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326417509] [2021-06-05 03:18:47,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326417509] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:47,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:47,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:47,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499165845] [2021-06-05 03:18:47,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:47,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:47,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:47,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:47,439 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 03:18:47,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:47,614 INFO L93 Difference]: Finished difference Result 1652 states and 4605 transitions. [2021-06-05 03:18:47,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:47,615 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 03:18:47,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:47,617 INFO L225 Difference]: With dead ends: 1652 [2021-06-05 03:18:47,617 INFO L226 Difference]: Without dead ends: 1563 [2021-06-05 03:18:47,617 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 03:18:47,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2021-06-05 03:18:47,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1418. [2021-06-05 03:18:47,630 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 03:18:47,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 4000 transitions. [2021-06-05 03:18:47,632 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 4000 transitions. Word has length 26 [2021-06-05 03:18:47,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:47,632 INFO L482 AbstractCegarLoop]: Abstraction has 1418 states and 4000 transitions. [2021-06-05 03:18:47,632 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:47,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 4000 transitions. [2021-06-05 03:18:47,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:47,633 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:47,633 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:47,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-06-05 03:18:47,633 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:47,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:47,634 INFO L82 PathProgramCache]: Analyzing trace with hash -2043486036, now seen corresponding path program 203 times [2021-06-05 03:18:47,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:47,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790175891] [2021-06-05 03:18:47,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:47,683 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 03:18:47,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:47,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790175891] [2021-06-05 03:18:47,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790175891] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:47,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:47,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:47,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698113163] [2021-06-05 03:18:47,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:47,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:47,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:47,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:47,684 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 03:18:47,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:47,813 INFO L93 Difference]: Finished difference Result 1692 states and 4710 transitions. [2021-06-05 03:18:47,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:47,813 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 03:18:47,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:47,815 INFO L225 Difference]: With dead ends: 1692 [2021-06-05 03:18:47,815 INFO L226 Difference]: Without dead ends: 1504 [2021-06-05 03:18:47,815 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:47,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2021-06-05 03:18:47,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1400. [2021-06-05 03:18:47,828 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 03:18:47,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3920 transitions. [2021-06-05 03:18:47,830 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3920 transitions. Word has length 26 [2021-06-05 03:18:47,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:47,830 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3920 transitions. [2021-06-05 03:18:47,830 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 03:18:47,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3920 transitions. [2021-06-05 03:18:47,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:47,831 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:47,831 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:47,831 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-06-05 03:18:47,831 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:47,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:47,831 INFO L82 PathProgramCache]: Analyzing trace with hash 672049614, now seen corresponding path program 204 times [2021-06-05 03:18:47,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:47,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721488422] [2021-06-05 03:18:47,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:47,887 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 03:18:47,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:47,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721488422] [2021-06-05 03:18:47,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721488422] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:47,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:47,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:47,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135808490] [2021-06-05 03:18:47,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:47,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:47,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:47,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:47,888 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 03:18:48,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:48,050 INFO L93 Difference]: Finished difference Result 1597 states and 4423 transitions. [2021-06-05 03:18:48,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:48,050 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:48,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:48,052 INFO L225 Difference]: With dead ends: 1597 [2021-06-05 03:18:48,052 INFO L226 Difference]: Without dead ends: 1470 [2021-06-05 03:18:48,052 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:48,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-06-05 03:18:48,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1368. [2021-06-05 03:18:48,064 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 03:18:48,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 3839 transitions. [2021-06-05 03:18:48,066 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 3839 transitions. Word has length 26 [2021-06-05 03:18:48,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:48,066 INFO L482 AbstractCegarLoop]: Abstraction has 1368 states and 3839 transitions. [2021-06-05 03:18:48,066 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:48,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 3839 transitions. [2021-06-05 03:18:48,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:48,067 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:48,068 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 03:18:48,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-06-05 03:18:48,068 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:48,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:48,068 INFO L82 PathProgramCache]: Analyzing trace with hash 680919408, now seen corresponding path program 205 times [2021-06-05 03:18:48,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:48,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968690714] [2021-06-05 03:18:48,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:48,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:48,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:48,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968690714] [2021-06-05 03:18:48,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968690714] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:48,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:48,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:48,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956868033] [2021-06-05 03:18:48,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:48,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:48,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:48,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:48,140 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 03:18:48,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:48,304 INFO L93 Difference]: Finished difference Result 1512 states and 4214 transitions. [2021-06-05 03:18:48,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:48,304 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 03:18:48,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:48,306 INFO L225 Difference]: With dead ends: 1512 [2021-06-05 03:18:48,306 INFO L226 Difference]: Without dead ends: 1424 [2021-06-05 03:18:48,306 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:48,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2021-06-05 03:18:48,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1371. [2021-06-05 03:18:48,318 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 03:18:48,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 3847 transitions. [2021-06-05 03:18:48,320 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 3847 transitions. Word has length 26 [2021-06-05 03:18:48,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:48,320 INFO L482 AbstractCegarLoop]: Abstraction has 1371 states and 3847 transitions. [2021-06-05 03:18:48,320 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:48,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 3847 transitions. [2021-06-05 03:18:48,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:48,321 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:48,321 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:48,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-06-05 03:18:48,321 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:48,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:48,322 INFO L82 PathProgramCache]: Analyzing trace with hash -31148434, now seen corresponding path program 206 times [2021-06-05 03:18:48,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:48,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194358577] [2021-06-05 03:18:48,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:48,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:48,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:48,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194358577] [2021-06-05 03:18:48,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194358577] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:48,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:48,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:48,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64037723] [2021-06-05 03:18:48,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:48,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:48,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:48,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:48,380 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 03:18:48,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:48,566 INFO L93 Difference]: Finished difference Result 1563 states and 4321 transitions. [2021-06-05 03:18:48,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:48,567 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:48,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:48,568 INFO L225 Difference]: With dead ends: 1563 [2021-06-05 03:18:48,568 INFO L226 Difference]: Without dead ends: 1477 [2021-06-05 03:18:48,568 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:48,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2021-06-05 03:18:48,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1369. [2021-06-05 03:18:48,580 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 03:18:48,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 3839 transitions. [2021-06-05 03:18:48,582 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 3839 transitions. Word has length 26 [2021-06-05 03:18:48,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:48,582 INFO L482 AbstractCegarLoop]: Abstraction has 1369 states and 3839 transitions. [2021-06-05 03:18:48,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:48,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 3839 transitions. [2021-06-05 03:18:48,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:48,584 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:48,584 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:48,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-06-05 03:18:48,584 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:48,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:48,584 INFO L82 PathProgramCache]: Analyzing trace with hash -711225138, now seen corresponding path program 207 times [2021-06-05 03:18:48,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:48,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634537650] [2021-06-05 03:18:48,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:48,640 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 03:18:48,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:48,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634537650] [2021-06-05 03:18:48,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634537650] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:48,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:48,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:48,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152353519] [2021-06-05 03:18:48,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:48,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:48,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:48,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:48,641 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 03:18:48,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:48,802 INFO L93 Difference]: Finished difference Result 1575 states and 4380 transitions. [2021-06-05 03:18:48,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:48,802 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 03:18:48,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:48,804 INFO L225 Difference]: With dead ends: 1575 [2021-06-05 03:18:48,804 INFO L226 Difference]: Without dead ends: 1464 [2021-06-05 03:18:48,804 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:48,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-06-05 03:18:48,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1349. [2021-06-05 03:18:48,816 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 03:18:48,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 3784 transitions. [2021-06-05 03:18:48,818 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 3784 transitions. Word has length 26 [2021-06-05 03:18:48,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:48,818 INFO L482 AbstractCegarLoop]: Abstraction has 1349 states and 3784 transitions. [2021-06-05 03:18:48,818 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:48,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 3784 transitions. [2021-06-05 03:18:48,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:48,819 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:48,819 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:48,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-06-05 03:18:48,819 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:48,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:48,819 INFO L82 PathProgramCache]: Analyzing trace with hash 40111740, now seen corresponding path program 208 times [2021-06-05 03:18:48,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:48,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726507060] [2021-06-05 03:18:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:48,867 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 03:18:48,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:48,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726507060] [2021-06-05 03:18:48,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726507060] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:48,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:48,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:48,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448481977] [2021-06-05 03:18:48,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:48,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:48,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:48,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:48,868 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 03:18:48,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:48,999 INFO L93 Difference]: Finished difference Result 1533 states and 4263 transitions. [2021-06-05 03:18:48,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:48,999 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 03:18:48,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:49,001 INFO L225 Difference]: With dead ends: 1533 [2021-06-05 03:18:49,001 INFO L226 Difference]: Without dead ends: 1448 [2021-06-05 03:18:49,001 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:49,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2021-06-05 03:18:49,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1355. [2021-06-05 03:18:49,013 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 03:18:49,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 3794 transitions. [2021-06-05 03:18:49,015 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 3794 transitions. Word has length 26 [2021-06-05 03:18:49,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:49,015 INFO L482 AbstractCegarLoop]: Abstraction has 1355 states and 3794 transitions. [2021-06-05 03:18:49,015 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 03:18:49,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 3794 transitions. [2021-06-05 03:18:49,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:49,016 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:49,016 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:49,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-06-05 03:18:49,017 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:49,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:49,017 INFO L82 PathProgramCache]: Analyzing trace with hash 909556348, now seen corresponding path program 209 times [2021-06-05 03:18:49,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:49,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108113780] [2021-06-05 03:18:49,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:49,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:49,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:49,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108113780] [2021-06-05 03:18:49,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108113780] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:49,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:49,068 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:49,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082529362] [2021-06-05 03:18:49,068 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:49,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:49,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:49,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:49,068 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 03:18:49,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:49,203 INFO L93 Difference]: Finished difference Result 1554 states and 4325 transitions. [2021-06-05 03:18:49,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:49,203 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 03:18:49,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:49,205 INFO L225 Difference]: With dead ends: 1554 [2021-06-05 03:18:49,205 INFO L226 Difference]: Without dead ends: 1459 [2021-06-05 03:18:49,205 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:49,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2021-06-05 03:18:49,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1367. [2021-06-05 03:18:49,217 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 03:18:49,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 3823 transitions. [2021-06-05 03:18:49,219 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 3823 transitions. Word has length 26 [2021-06-05 03:18:49,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:49,219 INFO L482 AbstractCegarLoop]: Abstraction has 1367 states and 3823 transitions. [2021-06-05 03:18:49,219 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 03:18:49,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 3823 transitions. [2021-06-05 03:18:49,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:49,220 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:49,220 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 03:18:49,220 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-06-05 03:18:49,220 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:49,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:49,220 INFO L82 PathProgramCache]: Analyzing trace with hash -559154882, now seen corresponding path program 210 times [2021-06-05 03:18:49,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:49,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665234149] [2021-06-05 03:18:49,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:49,279 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 03:18:49,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:49,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665234149] [2021-06-05 03:18:49,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665234149] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:49,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:49,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:49,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906444211] [2021-06-05 03:18:49,280 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:49,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:49,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:49,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:49,280 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 03:18:49,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:49,448 INFO L93 Difference]: Finished difference Result 1615 states and 4457 transitions. [2021-06-05 03:18:49,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:49,448 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:49,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:49,450 INFO L225 Difference]: With dead ends: 1615 [2021-06-05 03:18:49,450 INFO L226 Difference]: Without dead ends: 1530 [2021-06-05 03:18:49,450 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:49,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2021-06-05 03:18:49,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1391. [2021-06-05 03:18:49,462 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 03:18:49,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 3889 transitions. [2021-06-05 03:18:49,464 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 3889 transitions. Word has length 26 [2021-06-05 03:18:49,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:49,464 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 3889 transitions. [2021-06-05 03:18:49,464 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 03:18:49,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 3889 transitions. [2021-06-05 03:18:49,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:49,466 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:49,466 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 03:18:49,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-06-05 03:18:49,466 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:49,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:49,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1132552158, now seen corresponding path program 211 times [2021-06-05 03:18:49,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:49,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471028233] [2021-06-05 03:18:49,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:49,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:49,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471028233] [2021-06-05 03:18:49,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471028233] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:49,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:49,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:49,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698233881] [2021-06-05 03:18:49,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:49,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:49,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:49,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:49,528 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 03:18:49,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:49,697 INFO L93 Difference]: Finished difference Result 1549 states and 4282 transitions. [2021-06-05 03:18:49,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:49,697 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:49,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:49,699 INFO L225 Difference]: With dead ends: 1549 [2021-06-05 03:18:49,699 INFO L226 Difference]: Without dead ends: 1466 [2021-06-05 03:18:49,699 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 03:18:49,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-06-05 03:18:49,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1397. [2021-06-05 03:18:49,711 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 03:18:49,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 3897 transitions. [2021-06-05 03:18:49,713 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 3897 transitions. Word has length 26 [2021-06-05 03:18:49,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:49,713 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 3897 transitions. [2021-06-05 03:18:49,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:49,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 3897 transitions. [2021-06-05 03:18:49,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:49,714 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:49,714 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:49,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-06-05 03:18:49,715 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:49,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:49,715 INFO L82 PathProgramCache]: Analyzing trace with hash -546001310, now seen corresponding path program 212 times [2021-06-05 03:18:49,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:49,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162973267] [2021-06-05 03:18:49,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:49,778 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 03:18:49,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:49,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162973267] [2021-06-05 03:18:49,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162973267] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:49,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:49,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:49,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24281953] [2021-06-05 03:18:49,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:49,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:49,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:49,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:49,779 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 03:18:49,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:49,944 INFO L93 Difference]: Finished difference Result 1624 states and 4492 transitions. [2021-06-05 03:18:49,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:49,944 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:49,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:49,946 INFO L225 Difference]: With dead ends: 1624 [2021-06-05 03:18:49,946 INFO L226 Difference]: Without dead ends: 1536 [2021-06-05 03:18:49,946 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:49,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2021-06-05 03:18:49,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1423. [2021-06-05 03:18:49,959 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 03:18:49,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 3973 transitions. [2021-06-05 03:18:49,961 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 3973 transitions. Word has length 26 [2021-06-05 03:18:49,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:49,961 INFO L482 AbstractCegarLoop]: Abstraction has 1423 states and 3973 transitions. [2021-06-05 03:18:49,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:49,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 3973 transitions. [2021-06-05 03:18:49,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:49,962 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:49,962 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 03:18:49,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-06-05 03:18:49,962 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:49,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:49,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1258069152, now seen corresponding path program 213 times [2021-06-05 03:18:49,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:49,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435864096] [2021-06-05 03:18:49,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:50,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:50,020 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:50,020 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435864096] [2021-06-05 03:18:50,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435864096] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:50,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:50,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:50,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556228416] [2021-06-05 03:18:50,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:50,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:50,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:50,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:50,021 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 03:18:50,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:50,185 INFO L93 Difference]: Finished difference Result 1572 states and 4345 transitions. [2021-06-05 03:18:50,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:50,186 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:50,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:50,187 INFO L225 Difference]: With dead ends: 1572 [2021-06-05 03:18:50,187 INFO L226 Difference]: Without dead ends: 1484 [2021-06-05 03:18:50,188 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:50,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2021-06-05 03:18:50,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1415. [2021-06-05 03:18:50,200 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 03:18:50,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 3958 transitions. [2021-06-05 03:18:50,201 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 3958 transitions. Word has length 26 [2021-06-05 03:18:50,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:50,202 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 3958 transitions. [2021-06-05 03:18:50,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:50,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 3958 transitions. [2021-06-05 03:18:50,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:50,203 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:50,203 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:50,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-06-05 03:18:50,203 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:50,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:50,203 INFO L82 PathProgramCache]: Analyzing trace with hash -92316360, now seen corresponding path program 214 times [2021-06-05 03:18:50,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:50,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683374535] [2021-06-05 03:18:50,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:50,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:50,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683374535] [2021-06-05 03:18:50,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683374535] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:50,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:50,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:50,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374106840] [2021-06-05 03:18:50,259 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:50,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:50,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:50,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:50,259 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 03:18:50,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:50,429 INFO L93 Difference]: Finished difference Result 1653 states and 4558 transitions. [2021-06-05 03:18:50,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:50,429 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 03:18:50,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:50,431 INFO L225 Difference]: With dead ends: 1653 [2021-06-05 03:18:50,431 INFO L226 Difference]: Without dead ends: 1514 [2021-06-05 03:18:50,431 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:50,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-06-05 03:18:50,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1381. [2021-06-05 03:18:50,443 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 03:18:50,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 3860 transitions. [2021-06-05 03:18:50,445 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 3860 transitions. Word has length 26 [2021-06-05 03:18:50,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:50,445 INFO L482 AbstractCegarLoop]: Abstraction has 1381 states and 3860 transitions. [2021-06-05 03:18:50,445 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:50,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 3860 transitions. [2021-06-05 03:18:50,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:50,446 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:50,446 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:50,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-06-05 03:18:50,446 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:50,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:50,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1103631634, now seen corresponding path program 215 times [2021-06-05 03:18:50,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:50,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105024785] [2021-06-05 03:18:50,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:50,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:50,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105024785] [2021-06-05 03:18:50,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105024785] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:50,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:50,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:50,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375597255] [2021-06-05 03:18:50,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:50,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:50,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:50,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:50,504 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 03:18:50,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:50,674 INFO L93 Difference]: Finished difference Result 1627 states and 4481 transitions. [2021-06-05 03:18:50,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:50,674 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:50,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:50,676 INFO L225 Difference]: With dead ends: 1627 [2021-06-05 03:18:50,676 INFO L226 Difference]: Without dead ends: 1465 [2021-06-05 03:18:50,676 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:50,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2021-06-05 03:18:50,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1360. [2021-06-05 03:18:50,693 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 03:18:50,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 3804 transitions. [2021-06-05 03:18:50,695 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 3804 transitions. Word has length 26 [2021-06-05 03:18:50,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:50,695 INFO L482 AbstractCegarLoop]: Abstraction has 1360 states and 3804 transitions. [2021-06-05 03:18:50,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:50,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 3804 transitions. [2021-06-05 03:18:50,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:50,696 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:50,696 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:50,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-06-05 03:18:50,696 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:50,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:50,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1441326566, now seen corresponding path program 216 times [2021-06-05 03:18:50,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:50,696 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113588896] [2021-06-05 03:18:50,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:50,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:50,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:50,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113588896] [2021-06-05 03:18:50,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113588896] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:50,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:50,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:50,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951629687] [2021-06-05 03:18:50,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:50,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:50,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:50,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:50,754 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 03:18:50,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:50,926 INFO L93 Difference]: Finished difference Result 1494 states and 4137 transitions. [2021-06-05 03:18:50,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:50,927 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:50,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:50,928 INFO L225 Difference]: With dead ends: 1494 [2021-06-05 03:18:50,928 INFO L226 Difference]: Without dead ends: 1409 [2021-06-05 03:18:50,928 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:50,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2021-06-05 03:18:50,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1353. [2021-06-05 03:18:50,940 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 03:18:50,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 3778 transitions. [2021-06-05 03:18:50,942 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 3778 transitions. Word has length 26 [2021-06-05 03:18:50,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:50,942 INFO L482 AbstractCegarLoop]: Abstraction has 1353 states and 3778 transitions. [2021-06-05 03:18:50,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:50,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 3778 transitions. [2021-06-05 03:18:50,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:50,943 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:50,943 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:50,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-06-05 03:18:50,943 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:50,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:50,944 INFO L82 PathProgramCache]: Analyzing trace with hash -571881958, now seen corresponding path program 217 times [2021-06-05 03:18:50,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:50,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638102316] [2021-06-05 03:18:50,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:51,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:51,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:51,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638102316] [2021-06-05 03:18:51,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638102316] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:51,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:51,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:51,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099153997] [2021-06-05 03:18:51,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:51,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:51,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:51,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:51,004 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 03:18:51,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:51,170 INFO L93 Difference]: Finished difference Result 1511 states and 4172 transitions. [2021-06-05 03:18:51,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:51,171 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:51,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:51,172 INFO L225 Difference]: With dead ends: 1511 [2021-06-05 03:18:51,172 INFO L226 Difference]: Without dead ends: 1416 [2021-06-05 03:18:51,172 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:51,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-06-05 03:18:51,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1354. [2021-06-05 03:18:51,184 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 03:18:51,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 3779 transitions. [2021-06-05 03:18:51,186 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 3779 transitions. Word has length 26 [2021-06-05 03:18:51,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:51,186 INFO L482 AbstractCegarLoop]: Abstraction has 1354 states and 3779 transitions. [2021-06-05 03:18:51,186 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:51,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 3779 transitions. [2021-06-05 03:18:51,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:51,187 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:51,187 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:51,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-06-05 03:18:51,188 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:51,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:51,188 INFO L82 PathProgramCache]: Analyzing trace with hash -2040593188, now seen corresponding path program 218 times [2021-06-05 03:18:51,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:51,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346208263] [2021-06-05 03:18:51,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:51,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:51,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346208263] [2021-06-05 03:18:51,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346208263] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:51,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:51,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:51,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307822840] [2021-06-05 03:18:51,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:51,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:51,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:51,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:51,246 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 03:18:51,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:51,414 INFO L93 Difference]: Finished difference Result 1525 states and 4210 transitions. [2021-06-05 03:18:51,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:51,414 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:51,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:51,416 INFO L225 Difference]: With dead ends: 1525 [2021-06-05 03:18:51,416 INFO L226 Difference]: Without dead ends: 1440 [2021-06-05 03:18:51,416 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 03:18:51,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-06-05 03:18:51,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1356. [2021-06-05 03:18:51,428 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 03:18:51,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 3787 transitions. [2021-06-05 03:18:51,429 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 3787 transitions. Word has length 26 [2021-06-05 03:18:51,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:51,430 INFO L482 AbstractCegarLoop]: Abstraction has 1356 states and 3787 transitions. [2021-06-05 03:18:51,430 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:51,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 3787 transitions. [2021-06-05 03:18:51,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:51,431 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:51,431 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 03:18:51,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-06-05 03:18:51,431 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:51,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:51,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1680976832, now seen corresponding path program 219 times [2021-06-05 03:18:51,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:51,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144633269] [2021-06-05 03:18:51,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:51,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:51,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:51,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144633269] [2021-06-05 03:18:51,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144633269] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:51,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:51,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:51,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509247057] [2021-06-05 03:18:51,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:51,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:51,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:51,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:51,491 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 03:18:51,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:51,657 INFO L93 Difference]: Finished difference Result 1497 states and 4138 transitions. [2021-06-05 03:18:51,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:51,657 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:51,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:51,659 INFO L225 Difference]: With dead ends: 1497 [2021-06-05 03:18:51,659 INFO L226 Difference]: Without dead ends: 1414 [2021-06-05 03:18:51,659 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 03:18:51,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2021-06-05 03:18:51,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1357. [2021-06-05 03:18:51,672 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 03:18:51,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 3789 transitions. [2021-06-05 03:18:51,673 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 3789 transitions. Word has length 26 [2021-06-05 03:18:51,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:51,674 INFO L482 AbstractCegarLoop]: Abstraction has 1357 states and 3789 transitions. [2021-06-05 03:18:51,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:51,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 3789 transitions. [2021-06-05 03:18:51,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:51,675 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:51,675 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:51,675 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-06-05 03:18:51,675 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:51,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:51,675 INFO L82 PathProgramCache]: Analyzing trace with hash -2027439616, now seen corresponding path program 220 times [2021-06-05 03:18:51,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:51,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103309781] [2021-06-05 03:18:51,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:51,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:51,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:51,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103309781] [2021-06-05 03:18:51,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103309781] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:51,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:51,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:51,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379471411] [2021-06-05 03:18:51,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:51,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:51,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:51,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:51,733 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 03:18:51,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:51,915 INFO L93 Difference]: Finished difference Result 1489 states and 4130 transitions. [2021-06-05 03:18:51,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:51,916 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:51,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:51,917 INFO L225 Difference]: With dead ends: 1489 [2021-06-05 03:18:51,917 INFO L226 Difference]: Without dead ends: 1401 [2021-06-05 03:18:51,918 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:51,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2021-06-05 03:18:51,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1361. [2021-06-05 03:18:51,929 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 03:18:51,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 3801 transitions. [2021-06-05 03:18:51,931 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 3801 transitions. Word has length 26 [2021-06-05 03:18:51,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:51,931 INFO L482 AbstractCegarLoop]: Abstraction has 1361 states and 3801 transitions. [2021-06-05 03:18:51,931 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 03:18:51,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 3801 transitions. [2021-06-05 03:18:51,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:51,932 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:51,932 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 03:18:51,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-06-05 03:18:51,933 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:51,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:51,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1555459838, now seen corresponding path program 221 times [2021-06-05 03:18:51,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:51,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137561737] [2021-06-05 03:18:51,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:52,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:52,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:52,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137561737] [2021-06-05 03:18:52,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137561737] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:52,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:52,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:52,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435323011] [2021-06-05 03:18:52,008 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:52,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:52,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:52,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:52,009 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 03:18:52,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:52,173 INFO L93 Difference]: Finished difference Result 1502 states and 4148 transitions. [2021-06-05 03:18:52,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:52,173 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:52,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:52,175 INFO L225 Difference]: With dead ends: 1502 [2021-06-05 03:18:52,175 INFO L226 Difference]: Without dead ends: 1414 [2021-06-05 03:18:52,175 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:52,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2021-06-05 03:18:52,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1360. [2021-06-05 03:18:52,187 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 03:18:52,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 3801 transitions. [2021-06-05 03:18:52,188 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 3801 transitions. Word has length 26 [2021-06-05 03:18:52,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:52,188 INFO L482 AbstractCegarLoop]: Abstraction has 1360 states and 3801 transitions. [2021-06-05 03:18:52,188 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 03:18:52,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 3801 transitions. [2021-06-05 03:18:52,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:52,190 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:52,190 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 03:18:52,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-06-05 03:18:52,190 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:52,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:52,190 INFO L82 PathProgramCache]: Analyzing trace with hash -528175042, now seen corresponding path program 222 times [2021-06-05 03:18:52,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:52,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873766441] [2021-06-05 03:18:52,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:52,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:52,248 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:52,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873766441] [2021-06-05 03:18:52,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873766441] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:52,248 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:52,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:52,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815031744] [2021-06-05 03:18:52,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:52,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:52,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:52,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:52,249 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 03:18:52,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:52,414 INFO L93 Difference]: Finished difference Result 1528 states and 4222 transitions. [2021-06-05 03:18:52,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:52,414 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:52,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:52,416 INFO L225 Difference]: With dead ends: 1528 [2021-06-05 03:18:52,416 INFO L226 Difference]: Without dead ends: 1443 [2021-06-05 03:18:52,416 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:52,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-06-05 03:18:52,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1358. [2021-06-05 03:18:52,428 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 03:18:52,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 3793 transitions. [2021-06-05 03:18:52,430 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 3793 transitions. Word has length 26 [2021-06-05 03:18:52,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:52,430 INFO L482 AbstractCegarLoop]: Abstraction has 1358 states and 3793 transitions. [2021-06-05 03:18:52,430 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:52,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 3793 transitions. [2021-06-05 03:18:52,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:52,431 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:52,431 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 03:18:52,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-06-05 03:18:52,432 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:52,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:52,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1101572318, now seen corresponding path program 223 times [2021-06-05 03:18:52,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:52,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671505441] [2021-06-05 03:18:52,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:52,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:52,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671505441] [2021-06-05 03:18:52,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671505441] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:52,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:52,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:52,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351551233] [2021-06-05 03:18:52,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:52,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:52,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:52,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:52,498 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 03:18:52,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:52,663 INFO L93 Difference]: Finished difference Result 1519 states and 4205 transitions. [2021-06-05 03:18:52,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:52,663 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:52,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:52,665 INFO L225 Difference]: With dead ends: 1519 [2021-06-05 03:18:52,665 INFO L226 Difference]: Without dead ends: 1436 [2021-06-05 03:18:52,665 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 03:18:52,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-06-05 03:18:52,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1359. [2021-06-05 03:18:52,677 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 03:18:52,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 3792 transitions. [2021-06-05 03:18:52,679 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 3792 transitions. Word has length 26 [2021-06-05 03:18:52,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:52,679 INFO L482 AbstractCegarLoop]: Abstraction has 1359 states and 3792 transitions. [2021-06-05 03:18:52,679 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:52,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 3792 transitions. [2021-06-05 03:18:52,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:52,681 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:52,681 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:52,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-06-05 03:18:52,681 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:52,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:52,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1944327842, now seen corresponding path program 224 times [2021-06-05 03:18:52,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:52,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934177056] [2021-06-05 03:18:52,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:52,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:52,738 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:52,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934177056] [2021-06-05 03:18:52,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934177056] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:52,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:52,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:52,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415347901] [2021-06-05 03:18:52,738 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:52,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:52,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:52,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:52,739 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 03:18:52,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:52,899 INFO L93 Difference]: Finished difference Result 1503 states and 4164 transitions. [2021-06-05 03:18:52,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:52,899 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:52,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:52,901 INFO L225 Difference]: With dead ends: 1503 [2021-06-05 03:18:52,901 INFO L226 Difference]: Without dead ends: 1416 [2021-06-05 03:18:52,901 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:52,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-06-05 03:18:52,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1358. [2021-06-05 03:18:52,918 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 03:18:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 3792 transitions. [2021-06-05 03:18:52,919 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 3792 transitions. Word has length 26 [2021-06-05 03:18:52,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:52,920 INFO L482 AbstractCegarLoop]: Abstraction has 1358 states and 3792 transitions. [2021-06-05 03:18:52,920 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:52,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 3792 transitions. [2021-06-05 03:18:52,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:52,921 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:52,921 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 03:18:52,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-06-05 03:18:52,921 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:52,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:52,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1204204642, now seen corresponding path program 225 times [2021-06-05 03:18:52,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:52,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629523564] [2021-06-05 03:18:52,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:52,978 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 03:18:52,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:52,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629523564] [2021-06-05 03:18:52,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629523564] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:52,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:52,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:52,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063903607] [2021-06-05 03:18:52,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:52,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:52,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:52,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:52,979 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 03:18:53,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:53,155 INFO L93 Difference]: Finished difference Result 1491 states and 4141 transitions. [2021-06-05 03:18:53,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:53,155 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:53,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:53,157 INFO L225 Difference]: With dead ends: 1491 [2021-06-05 03:18:53,157 INFO L226 Difference]: Without dead ends: 1403 [2021-06-05 03:18:53,157 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:53,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2021-06-05 03:18:53,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1360. [2021-06-05 03:18:53,169 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 03:18:53,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 3799 transitions. [2021-06-05 03:18:53,171 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 3799 transitions. Word has length 26 [2021-06-05 03:18:53,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:53,171 INFO L482 AbstractCegarLoop]: Abstraction has 1360 states and 3799 transitions. [2021-06-05 03:18:53,171 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:53,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 3799 transitions. [2021-06-05 03:18:53,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:53,172 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:53,172 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:53,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-06-05 03:18:53,172 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:53,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:53,172 INFO L82 PathProgramCache]: Analyzing trace with hash 492136800, now seen corresponding path program 226 times [2021-06-05 03:18:53,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:53,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358895255] [2021-06-05 03:18:53,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:53,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:53,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358895255] [2021-06-05 03:18:53,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358895255] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:53,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:53,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:53,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959688137] [2021-06-05 03:18:53,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:53,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:53,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:53,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:53,250 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 03:18:53,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:53,413 INFO L93 Difference]: Finished difference Result 1499 states and 4143 transitions. [2021-06-05 03:18:53,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:53,413 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 03:18:53,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:53,415 INFO L225 Difference]: With dead ends: 1499 [2021-06-05 03:18:53,415 INFO L226 Difference]: Without dead ends: 1413 [2021-06-05 03:18:53,415 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:53,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2021-06-05 03:18:53,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1359. [2021-06-05 03:18:53,427 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 03:18:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 3792 transitions. [2021-06-05 03:18:53,429 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 3792 transitions. Word has length 26 [2021-06-05 03:18:53,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:53,429 INFO L482 AbstractCegarLoop]: Abstraction has 1359 states and 3792 transitions. [2021-06-05 03:18:53,429 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 03:18:53,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 3792 transitions. [2021-06-05 03:18:53,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:53,430 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:53,430 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:53,430 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-06-05 03:18:53,430 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:53,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:53,431 INFO L82 PathProgramCache]: Analyzing trace with hash -187939904, now seen corresponding path program 227 times [2021-06-05 03:18:53,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:53,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091450492] [2021-06-05 03:18:53,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:53,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:53,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:53,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091450492] [2021-06-05 03:18:53,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091450492] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:53,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:53,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:53,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995639727] [2021-06-05 03:18:53,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:53,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:53,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:53,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:53,495 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 03:18:53,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:53,659 INFO L93 Difference]: Finished difference Result 1555 states and 4298 transitions. [2021-06-05 03:18:53,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:53,659 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:53,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:53,661 INFO L225 Difference]: With dead ends: 1555 [2021-06-05 03:18:53,661 INFO L226 Difference]: Without dead ends: 1458 [2021-06-05 03:18:53,661 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 03:18:53,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2021-06-05 03:18:53,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1352. [2021-06-05 03:18:53,673 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 03:18:53,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 3769 transitions. [2021-06-05 03:18:53,675 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 3769 transitions. Word has length 26 [2021-06-05 03:18:53,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:53,675 INFO L482 AbstractCegarLoop]: Abstraction has 1352 states and 3769 transitions. [2021-06-05 03:18:53,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:53,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 3769 transitions. [2021-06-05 03:18:53,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:53,677 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:53,677 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:53,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-06-05 03:18:53,677 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:53,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:53,677 INFO L82 PathProgramCache]: Analyzing trace with hash 402377150, now seen corresponding path program 228 times [2021-06-05 03:18:53,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:53,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861610624] [2021-06-05 03:18:53,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:53,738 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:53,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861610624] [2021-06-05 03:18:53,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861610624] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:53,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:53,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:53,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123984824] [2021-06-05 03:18:53,738 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:53,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:53,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:53,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:53,738 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 03:18:53,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:53,902 INFO L93 Difference]: Finished difference Result 1504 states and 4155 transitions. [2021-06-05 03:18:53,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:53,902 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:53,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:53,904 INFO L225 Difference]: With dead ends: 1504 [2021-06-05 03:18:53,904 INFO L226 Difference]: Without dead ends: 1415 [2021-06-05 03:18:53,904 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:53,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2021-06-05 03:18:53,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1347. [2021-06-05 03:18:53,916 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 03:18:53,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 3758 transitions. [2021-06-05 03:18:53,918 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 3758 transitions. Word has length 26 [2021-06-05 03:18:53,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:53,918 INFO L482 AbstractCegarLoop]: Abstraction has 1347 states and 3758 transitions. [2021-06-05 03:18:53,918 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 03:18:53,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 3758 transitions. [2021-06-05 03:18:53,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:53,919 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:53,919 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:53,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-06-05 03:18:53,919 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:53,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:53,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1005160398, now seen corresponding path program 229 times [2021-06-05 03:18:53,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:53,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799157744] [2021-06-05 03:18:53,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:53,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:53,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:53,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799157744] [2021-06-05 03:18:53,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799157744] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:53,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:53,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:53,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346362520] [2021-06-05 03:18:53,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:53,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:53,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:53,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:53,968 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 03:18:54,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:54,107 INFO L93 Difference]: Finished difference Result 1541 states and 4265 transitions. [2021-06-05 03:18:54,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:54,107 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 03:18:54,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:54,109 INFO L225 Difference]: With dead ends: 1541 [2021-06-05 03:18:54,109 INFO L226 Difference]: Without dead ends: 1453 [2021-06-05 03:18:54,109 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:54,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-05 03:18:54,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1373. [2021-06-05 03:18:54,121 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 03:18:54,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 3834 transitions. [2021-06-05 03:18:54,123 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 3834 transitions. Word has length 26 [2021-06-05 03:18:54,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:54,123 INFO L482 AbstractCegarLoop]: Abstraction has 1373 states and 3834 transitions. [2021-06-05 03:18:54,123 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 03:18:54,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 3834 transitions. [2021-06-05 03:18:54,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:54,124 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:54,124 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:54,124 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-06-05 03:18:54,124 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:54,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:54,125 INFO L82 PathProgramCache]: Analyzing trace with hash 293092556, now seen corresponding path program 230 times [2021-06-05 03:18:54,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:54,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483653103] [2021-06-05 03:18:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:54,176 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 03:18:54,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:54,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483653103] [2021-06-05 03:18:54,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483653103] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:54,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:54,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:54,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873141789] [2021-06-05 03:18:54,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:54,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:54,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:54,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:54,177 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 03:18:54,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:54,343 INFO L93 Difference]: Finished difference Result 1604 states and 4405 transitions. [2021-06-05 03:18:54,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:54,343 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:54,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:54,345 INFO L225 Difference]: With dead ends: 1604 [2021-06-05 03:18:54,345 INFO L226 Difference]: Without dead ends: 1393 [2021-06-05 03:18:54,345 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:54,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-06-05 03:18:54,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1293. [2021-06-05 03:18:54,357 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 03:18:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3593 transitions. [2021-06-05 03:18:54,358 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3593 transitions. Word has length 26 [2021-06-05 03:18:54,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:54,358 INFO L482 AbstractCegarLoop]: Abstraction has 1293 states and 3593 transitions. [2021-06-05 03:18:54,358 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:54,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3593 transitions. [2021-06-05 03:18:54,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:54,360 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:54,360 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:54,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-06-05 03:18:54,360 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:54,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:54,360 INFO L82 PathProgramCache]: Analyzing trace with hash -705195920, now seen corresponding path program 231 times [2021-06-05 03:18:54,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:54,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563920821] [2021-06-05 03:18:54,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:54,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:54,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563920821] [2021-06-05 03:18:54,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563920821] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:54,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:54,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:54,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323444703] [2021-06-05 03:18:54,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:54,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:54,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:54,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:54,417 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 03:18:54,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:54,574 INFO L93 Difference]: Finished difference Result 1480 states and 4066 transitions. [2021-06-05 03:18:54,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:54,575 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:54,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:54,576 INFO L225 Difference]: With dead ends: 1480 [2021-06-05 03:18:54,576 INFO L226 Difference]: Without dead ends: 1392 [2021-06-05 03:18:54,577 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:54,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-06-05 03:18:54,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1290. [2021-06-05 03:18:54,588 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 03:18:54,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 3585 transitions. [2021-06-05 03:18:54,590 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 3585 transitions. Word has length 26 [2021-06-05 03:18:54,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:54,590 INFO L482 AbstractCegarLoop]: Abstraction has 1290 states and 3585 transitions. [2021-06-05 03:18:54,590 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:54,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 3585 transitions. [2021-06-05 03:18:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:54,591 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:54,591 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:54,591 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-06-05 03:18:54,591 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:54,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:54,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1417263762, now seen corresponding path program 232 times [2021-06-05 03:18:54,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:54,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085277992] [2021-06-05 03:18:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:54,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:54,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:54,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085277992] [2021-06-05 03:18:54,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085277992] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:54,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:54,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:54,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158907603] [2021-06-05 03:18:54,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:54,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:54,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:54,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:54,652 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 03:18:54,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:54,818 INFO L93 Difference]: Finished difference Result 1427 states and 3933 transitions. [2021-06-05 03:18:54,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:54,819 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:54,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:54,820 INFO L225 Difference]: With dead ends: 1427 [2021-06-05 03:18:54,820 INFO L226 Difference]: Without dead ends: 1341 [2021-06-05 03:18:54,820 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 03:18:54,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-06-05 03:18:54,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1293. [2021-06-05 03:18:54,832 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 03:18:54,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3590 transitions. [2021-06-05 03:18:54,833 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3590 transitions. Word has length 26 [2021-06-05 03:18:54,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:54,833 INFO L482 AbstractCegarLoop]: Abstraction has 1293 states and 3590 transitions. [2021-06-05 03:18:54,833 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:54,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3590 transitions. [2021-06-05 03:18:54,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:54,835 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:54,835 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 03:18:54,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-06-05 03:18:54,835 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:54,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:54,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1507023412, now seen corresponding path program 233 times [2021-06-05 03:18:54,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:54,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070921169] [2021-06-05 03:18:54,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:54,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:54,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070921169] [2021-06-05 03:18:54,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070921169] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:54,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:54,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:54,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049294586] [2021-06-05 03:18:54,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:54,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:54,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:54,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:54,893 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 03:18:55,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:55,056 INFO L93 Difference]: Finished difference Result 1430 states and 3930 transitions. [2021-06-05 03:18:55,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:55,056 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 03:18:55,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:55,058 INFO L225 Difference]: With dead ends: 1430 [2021-06-05 03:18:55,058 INFO L226 Difference]: Without dead ends: 1298 [2021-06-05 03:18:55,058 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:55,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-06-05 03:18:55,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1201. [2021-06-05 03:18:55,068 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 03:18:55,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 3351 transitions. [2021-06-05 03:18:55,070 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 3351 transitions. Word has length 26 [2021-06-05 03:18:55,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:55,070 INFO L482 AbstractCegarLoop]: Abstraction has 1201 states and 3351 transitions. [2021-06-05 03:18:55,070 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 03:18:55,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 3351 transitions. [2021-06-05 03:18:55,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:55,071 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:55,071 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 03:18:55,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-06-05 03:18:55,071 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:55,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:55,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1300378374, now seen corresponding path program 234 times [2021-06-05 03:18:55,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:55,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119256446] [2021-06-05 03:18:55,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:55,123 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 03:18:55,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:55,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119256446] [2021-06-05 03:18:55,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119256446] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:55,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:55,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:55,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409494775] [2021-06-05 03:18:55,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:55,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:55,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:55,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:55,124 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 03:18:55,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:55,245 INFO L93 Difference]: Finished difference Result 1516 states and 4163 transitions. [2021-06-05 03:18:55,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:55,245 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 03:18:55,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:55,247 INFO L225 Difference]: With dead ends: 1516 [2021-06-05 03:18:55,247 INFO L226 Difference]: Without dead ends: 1341 [2021-06-05 03:18:55,247 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:55,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-06-05 03:18:55,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1275. [2021-06-05 03:18:55,258 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 03:18:55,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3530 transitions. [2021-06-05 03:18:55,259 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3530 transitions. Word has length 26 [2021-06-05 03:18:55,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:55,259 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3530 transitions. [2021-06-05 03:18:55,259 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 03:18:55,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3530 transitions. [2021-06-05 03:18:55,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:55,261 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:55,261 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:55,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-06-05 03:18:55,261 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:55,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:55,261 INFO L82 PathProgramCache]: Analyzing trace with hash 2135003928, now seen corresponding path program 235 times [2021-06-05 03:18:55,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:55,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401215566] [2021-06-05 03:18:55,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:55,320 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 03:18:55,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:55,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401215566] [2021-06-05 03:18:55,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401215566] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:55,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:55,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:55,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815824709] [2021-06-05 03:18:55,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:55,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:55,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:55,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:55,321 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 03:18:55,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:55,473 INFO L93 Difference]: Finished difference Result 1474 states and 4020 transitions. [2021-06-05 03:18:55,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:55,473 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:55,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:55,475 INFO L225 Difference]: With dead ends: 1474 [2021-06-05 03:18:55,475 INFO L226 Difference]: Without dead ends: 1337 [2021-06-05 03:18:55,475 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:55,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2021-06-05 03:18:55,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1249. [2021-06-05 03:18:55,486 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 03:18:55,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 3456 transitions. [2021-06-05 03:18:55,487 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 3456 transitions. Word has length 26 [2021-06-05 03:18:55,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:55,487 INFO L482 AbstractCegarLoop]: Abstraction has 1249 states and 3456 transitions. [2021-06-05 03:18:55,487 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:55,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 3456 transitions. [2021-06-05 03:18:55,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:55,488 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:55,488 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:55,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-06-05 03:18:55,488 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:55,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:55,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1232534076, now seen corresponding path program 236 times [2021-06-05 03:18:55,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:55,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516795552] [2021-06-05 03:18:55,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:55,539 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 03:18:55,539 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:55,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516795552] [2021-06-05 03:18:55,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516795552] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:55,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:55,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:55,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152965248] [2021-06-05 03:18:55,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:55,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:55,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:55,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:55,540 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 03:18:55,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:55,662 INFO L93 Difference]: Finished difference Result 1527 states and 4192 transitions. [2021-06-05 03:18:55,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:55,662 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 03:18:55,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:55,664 INFO L225 Difference]: With dead ends: 1527 [2021-06-05 03:18:55,664 INFO L226 Difference]: Without dead ends: 1416 [2021-06-05 03:18:55,664 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:55,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-06-05 03:18:55,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1255. [2021-06-05 03:18:55,675 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 03:18:55,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 3466 transitions. [2021-06-05 03:18:55,677 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 3466 transitions. Word has length 26 [2021-06-05 03:18:55,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:55,677 INFO L482 AbstractCegarLoop]: Abstraction has 1255 states and 3466 transitions. [2021-06-05 03:18:55,677 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 03:18:55,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 3466 transitions. [2021-06-05 03:18:55,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:55,678 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:55,678 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:55,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-06-05 03:18:55,678 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:55,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:55,679 INFO L82 PathProgramCache]: Analyzing trace with hash 324282940, now seen corresponding path program 237 times [2021-06-05 03:18:55,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:55,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409370661] [2021-06-05 03:18:55,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:55,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:55,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:55,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409370661] [2021-06-05 03:18:55,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409370661] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:55,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:55,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:55,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635287446] [2021-06-05 03:18:55,735 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:55,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:55,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:55,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:55,735 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 03:18:55,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:55,893 INFO L93 Difference]: Finished difference Result 1417 states and 3868 transitions. [2021-06-05 03:18:55,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:55,894 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:55,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:55,895 INFO L225 Difference]: With dead ends: 1417 [2021-06-05 03:18:55,895 INFO L226 Difference]: Without dead ends: 1324 [2021-06-05 03:18:55,896 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:55,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-06-05 03:18:55,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1258. [2021-06-05 03:18:55,906 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 03:18:55,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 3477 transitions. [2021-06-05 03:18:55,908 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 3477 transitions. Word has length 26 [2021-06-05 03:18:55,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:55,908 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 3477 transitions. [2021-06-05 03:18:55,908 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:55,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 3477 transitions. [2021-06-05 03:18:55,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:55,909 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:55,909 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 03:18:55,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-06-05 03:18:55,910 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:55,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:55,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1193727548, now seen corresponding path program 238 times [2021-06-05 03:18:55,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:55,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665259065] [2021-06-05 03:18:55,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:55,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:55,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:55,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665259065] [2021-06-05 03:18:55,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665259065] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:55,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:55,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:55,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366524882] [2021-06-05 03:18:55,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:55,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:55,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:55,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:55,966 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 03:18:56,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:56,125 INFO L93 Difference]: Finished difference Result 1452 states and 3941 transitions. [2021-06-05 03:18:56,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:56,125 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:56,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:56,127 INFO L225 Difference]: With dead ends: 1452 [2021-06-05 03:18:56,127 INFO L226 Difference]: Without dead ends: 1334 [2021-06-05 03:18:56,127 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:56,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-06-05 03:18:56,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1252. [2021-06-05 03:18:56,138 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 03:18:56,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3449 transitions. [2021-06-05 03:18:56,139 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3449 transitions. Word has length 26 [2021-06-05 03:18:56,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:56,139 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3449 transitions. [2021-06-05 03:18:56,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:56,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3449 transitions. [2021-06-05 03:18:56,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:56,140 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:56,140 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:56,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-06-05 03:18:56,141 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:56,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:56,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1244858906, now seen corresponding path program 239 times [2021-06-05 03:18:56,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:56,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616171724] [2021-06-05 03:18:56,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:56,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:56,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:56,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616171724] [2021-06-05 03:18:56,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616171724] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:56,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:56,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:56,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138856338] [2021-06-05 03:18:56,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:56,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:56,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:56,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:56,228 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 03:18:56,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:56,390 INFO L93 Difference]: Finished difference Result 1528 states and 4182 transitions. [2021-06-05 03:18:56,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:56,390 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:56,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:56,392 INFO L225 Difference]: With dead ends: 1528 [2021-06-05 03:18:56,392 INFO L226 Difference]: Without dead ends: 1420 [2021-06-05 03:18:56,392 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:56,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-06-05 03:18:56,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1249. [2021-06-05 03:18:56,404 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 03:18:56,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 3441 transitions. [2021-06-05 03:18:56,405 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 3441 transitions. Word has length 26 [2021-06-05 03:18:56,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:56,405 INFO L482 AbstractCegarLoop]: Abstraction has 1249 states and 3441 transitions. [2021-06-05 03:18:56,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:56,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 3441 transitions. [2021-06-05 03:18:56,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:56,407 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:56,407 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:56,407 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-06-05 03:18:56,407 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:56,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:56,407 INFO L82 PathProgramCache]: Analyzing trace with hash 396768502, now seen corresponding path program 240 times [2021-06-05 03:18:56,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:56,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2446432] [2021-06-05 03:18:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:56,463 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 03:18:56,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:56,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2446432] [2021-06-05 03:18:56,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2446432] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:56,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:56,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:56,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895746303] [2021-06-05 03:18:56,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:56,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:56,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:56,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:56,464 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 03:18:56,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:56,589 INFO L93 Difference]: Finished difference Result 1511 states and 4128 transitions. [2021-06-05 03:18:56,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:56,589 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 03:18:56,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:56,591 INFO L225 Difference]: With dead ends: 1511 [2021-06-05 03:18:56,591 INFO L226 Difference]: Without dead ends: 1418 [2021-06-05 03:18:56,591 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:56,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2021-06-05 03:18:56,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1275. [2021-06-05 03:18:56,603 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 03:18:56,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3517 transitions. [2021-06-05 03:18:56,604 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3517 transitions. Word has length 26 [2021-06-05 03:18:56,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:56,605 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3517 transitions. [2021-06-05 03:18:56,605 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 03:18:56,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3517 transitions. [2021-06-05 03:18:56,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:56,606 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:56,606 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 03:18:56,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-06-05 03:18:56,606 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:56,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:56,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1266213110, now seen corresponding path program 241 times [2021-06-05 03:18:56,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:56,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148410407] [2021-06-05 03:18:56,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:56,661 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 03:18:56,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:56,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148410407] [2021-06-05 03:18:56,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148410407] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:56,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:56,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:56,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100395520] [2021-06-05 03:18:56,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:56,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:56,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:56,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:56,662 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 03:18:56,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:56,817 INFO L93 Difference]: Finished difference Result 1582 states and 4293 transitions. [2021-06-05 03:18:56,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:56,817 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:56,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:56,819 INFO L225 Difference]: With dead ends: 1582 [2021-06-05 03:18:56,819 INFO L226 Difference]: Without dead ends: 1369 [2021-06-05 03:18:56,819 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:56,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2021-06-05 03:18:56,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1275. [2021-06-05 03:18:56,830 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 03:18:56,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3491 transitions. [2021-06-05 03:18:56,832 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3491 transitions. Word has length 26 [2021-06-05 03:18:56,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:56,832 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3491 transitions. [2021-06-05 03:18:56,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:56,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3491 transitions. [2021-06-05 03:18:56,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:56,833 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:56,833 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 03:18:56,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-06-05 03:18:56,833 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:56,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:56,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1140650728, now seen corresponding path program 242 times [2021-06-05 03:18:56,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:56,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452614926] [2021-06-05 03:18:56,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:56,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:56,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:56,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452614926] [2021-06-05 03:18:56,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452614926] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:56,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:56,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:56,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774966244] [2021-06-05 03:18:56,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:56,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:56,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:56,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:56,894 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 03:18:57,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:57,052 INFO L93 Difference]: Finished difference Result 1460 states and 3935 transitions. [2021-06-05 03:18:57,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:57,053 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:57,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:57,054 INFO L225 Difference]: With dead ends: 1460 [2021-06-05 03:18:57,054 INFO L226 Difference]: Without dead ends: 1367 [2021-06-05 03:18:57,054 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:57,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2021-06-05 03:18:57,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1275. [2021-06-05 03:18:57,066 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 03:18:57,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3487 transitions. [2021-06-05 03:18:57,067 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3487 transitions. Word has length 26 [2021-06-05 03:18:57,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:57,067 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3487 transitions. [2021-06-05 03:18:57,067 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:57,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3487 transitions. [2021-06-05 03:18:57,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:57,069 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:57,069 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:57,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-06-05 03:18:57,069 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:57,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:57,069 INFO L82 PathProgramCache]: Analyzing trace with hash -271206120, now seen corresponding path program 243 times [2021-06-05 03:18:57,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:57,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235906682] [2021-06-05 03:18:57,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:57,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:57,125 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:57,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235906682] [2021-06-05 03:18:57,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235906682] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:57,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:57,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:57,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674364439] [2021-06-05 03:18:57,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:57,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:57,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:57,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:57,126 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 03:18:57,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:57,292 INFO L93 Difference]: Finished difference Result 1471 states and 3964 transitions. [2021-06-05 03:18:57,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:57,293 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 03:18:57,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:57,298 INFO L225 Difference]: With dead ends: 1471 [2021-06-05 03:18:57,299 INFO L226 Difference]: Without dead ends: 1362 [2021-06-05 03:18:57,299 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:57,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-06-05 03:18:57,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1290. [2021-06-05 03:18:57,310 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 03:18:57,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 3523 transitions. [2021-06-05 03:18:57,312 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 3523 transitions. Word has length 26 [2021-06-05 03:18:57,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:57,312 INFO L482 AbstractCegarLoop]: Abstraction has 1290 states and 3523 transitions. [2021-06-05 03:18:57,312 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 03:18:57,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 3523 transitions. [2021-06-05 03:18:57,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:57,313 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:57,313 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:57,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-06-05 03:18:57,314 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:57,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:57,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1899862930, now seen corresponding path program 244 times [2021-06-05 03:18:57,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:57,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115323215] [2021-06-05 03:18:57,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:57,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:57,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115323215] [2021-06-05 03:18:57,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115323215] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:57,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:57,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:57,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678037417] [2021-06-05 03:18:57,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:57,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:57,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:57,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:57,371 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 03:18:57,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:57,529 INFO L93 Difference]: Finished difference Result 1456 states and 3922 transitions. [2021-06-05 03:18:57,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:57,530 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:57,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:57,531 INFO L225 Difference]: With dead ends: 1456 [2021-06-05 03:18:57,531 INFO L226 Difference]: Without dead ends: 1294 [2021-06-05 03:18:57,531 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:57,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-06-05 03:18:57,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1245. [2021-06-05 03:18:57,542 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 03:18:57,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3411 transitions. [2021-06-05 03:18:57,544 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3411 transitions. Word has length 26 [2021-06-05 03:18:57,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:57,544 INFO L482 AbstractCegarLoop]: Abstraction has 1245 states and 3411 transitions. [2021-06-05 03:18:57,544 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:57,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3411 transitions. [2021-06-05 03:18:57,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:57,545 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:57,545 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:57,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-06-05 03:18:57,545 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:57,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:57,545 INFO L82 PathProgramCache]: Analyzing trace with hash 760808728, now seen corresponding path program 245 times [2021-06-05 03:18:57,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:57,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493168139] [2021-06-05 03:18:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:57,595 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 03:18:57,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:57,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493168139] [2021-06-05 03:18:57,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493168139] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:57,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:57,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:57,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81815662] [2021-06-05 03:18:57,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:57,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:57,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:57,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:57,596 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 03:18:57,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:57,720 INFO L93 Difference]: Finished difference Result 1475 states and 3997 transitions. [2021-06-05 03:18:57,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:57,720 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 03:18:57,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:57,722 INFO L225 Difference]: With dead ends: 1475 [2021-06-05 03:18:57,722 INFO L226 Difference]: Without dead ends: 1320 [2021-06-05 03:18:57,722 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:57,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-06-05 03:18:57,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1284. [2021-06-05 03:18:57,733 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 03:18:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 3492 transitions. [2021-06-05 03:18:57,735 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 3492 transitions. Word has length 26 [2021-06-05 03:18:57,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:57,735 INFO L482 AbstractCegarLoop]: Abstraction has 1284 states and 3492 transitions. [2021-06-05 03:18:57,735 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 03:18:57,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 3492 transitions. [2021-06-05 03:18:57,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:57,736 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:57,736 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 03:18:57,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-06-05 03:18:57,736 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:57,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:57,736 INFO L82 PathProgramCache]: Analyzing trace with hash -98776266, now seen corresponding path program 246 times [2021-06-05 03:18:57,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:57,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758470033] [2021-06-05 03:18:57,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:57,798 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 03:18:57,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:57,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758470033] [2021-06-05 03:18:57,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758470033] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:57,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:57,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:57,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310623738] [2021-06-05 03:18:57,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:57,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:57,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:57,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:57,799 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 03:18:57,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:57,955 INFO L93 Difference]: Finished difference Result 1451 states and 3899 transitions. [2021-06-05 03:18:57,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:57,955 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:57,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:57,957 INFO L225 Difference]: With dead ends: 1451 [2021-06-05 03:18:57,957 INFO L226 Difference]: Without dead ends: 1310 [2021-06-05 03:18:57,957 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:57,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-06-05 03:18:57,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1258. [2021-06-05 03:18:57,968 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 03:18:57,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 3420 transitions. [2021-06-05 03:18:57,969 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 3420 transitions. Word has length 26 [2021-06-05 03:18:57,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:57,969 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 3420 transitions. [2021-06-05 03:18:57,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:57,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 3420 transitions. [2021-06-05 03:18:57,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:57,970 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:57,970 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:57,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-06-05 03:18:57,971 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:57,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:57,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1221048170, now seen corresponding path program 247 times [2021-06-05 03:18:57,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:57,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591167837] [2021-06-05 03:18:57,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:58,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:58,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:58,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591167837] [2021-06-05 03:18:58,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591167837] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:58,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:58,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:58,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856394707] [2021-06-05 03:18:58,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:58,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:58,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:58,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:58,028 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 03:18:58,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:58,188 INFO L93 Difference]: Finished difference Result 1416 states and 3802 transitions. [2021-06-05 03:18:58,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:58,189 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:58,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:58,190 INFO L225 Difference]: With dead ends: 1416 [2021-06-05 03:18:58,190 INFO L226 Difference]: Without dead ends: 1335 [2021-06-05 03:18:58,190 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:58,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-06-05 03:18:58,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1260. [2021-06-05 03:18:58,201 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 03:18:58,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 3427 transitions. [2021-06-05 03:18:58,203 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 3427 transitions. Word has length 26 [2021-06-05 03:18:58,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:58,203 INFO L482 AbstractCegarLoop]: Abstraction has 1260 states and 3427 transitions. [2021-06-05 03:18:58,203 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 03:18:58,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 3427 transitions. [2021-06-05 03:18:58,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:58,204 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:58,204 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:58,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-06-05 03:18:58,204 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:58,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:58,205 INFO L82 PathProgramCache]: Analyzing trace with hash -351603562, now seen corresponding path program 248 times [2021-06-05 03:18:58,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:58,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709610950] [2021-06-05 03:18:58,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:58,261 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 03:18:58,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:58,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709610950] [2021-06-05 03:18:58,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709610950] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:58,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:58,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:58,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222964031] [2021-06-05 03:18:58,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:58,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:58,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:58,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:58,262 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 03:18:58,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:58,425 INFO L93 Difference]: Finished difference Result 1422 states and 3809 transitions. [2021-06-05 03:18:58,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:58,425 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:58,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:58,427 INFO L225 Difference]: With dead ends: 1422 [2021-06-05 03:18:58,427 INFO L226 Difference]: Without dead ends: 1302 [2021-06-05 03:18:58,427 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:58,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2021-06-05 03:18:58,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1256. [2021-06-05 03:18:58,438 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 03:18:58,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 3414 transitions. [2021-06-05 03:18:58,439 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 3414 transitions. Word has length 26 [2021-06-05 03:18:58,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:58,439 INFO L482 AbstractCegarLoop]: Abstraction has 1256 states and 3414 transitions. [2021-06-05 03:18:58,439 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:58,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 3414 transitions. [2021-06-05 03:18:58,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:58,441 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:58,441 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 03:18:58,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-06-05 03:18:58,441 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:58,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:58,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1820314792, now seen corresponding path program 249 times [2021-06-05 03:18:58,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:58,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258899] [2021-06-05 03:18:58,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:58,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:58,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258899] [2021-06-05 03:18:58,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258899] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:58,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:58,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:58,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181398806] [2021-06-05 03:18:58,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:58,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:58,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:58,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:58,498 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 03:18:58,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:58,656 INFO L93 Difference]: Finished difference Result 1383 states and 3716 transitions. [2021-06-05 03:18:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:58,657 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:58,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:58,658 INFO L225 Difference]: With dead ends: 1383 [2021-06-05 03:18:58,658 INFO L226 Difference]: Without dead ends: 1292 [2021-06-05 03:18:58,658 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:58,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-06-05 03:18:58,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1244. [2021-06-05 03:18:58,669 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 03:18:58,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3391 transitions. [2021-06-05 03:18:58,671 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3391 transitions. Word has length 26 [2021-06-05 03:18:58,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:58,671 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3391 transitions. [2021-06-05 03:18:58,671 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:58,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3391 transitions. [2021-06-05 03:18:58,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:58,672 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:58,672 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:58,672 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-06-05 03:18:58,672 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:58,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:58,672 INFO L82 PathProgramCache]: Analyzing trace with hash -413150982, now seen corresponding path program 250 times [2021-06-05 03:18:58,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:58,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355250168] [2021-06-05 03:18:58,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:58,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:58,719 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:58,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355250168] [2021-06-05 03:18:58,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355250168] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:58,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:58,719 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:18:58,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335014225] [2021-06-05 03:18:58,720 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:18:58,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:58,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:18:58,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:58,720 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 03:18:58,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:58,844 INFO L93 Difference]: Finished difference Result 1483 states and 4005 transitions. [2021-06-05 03:18:58,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:18:58,844 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 03:18:58,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:58,846 INFO L225 Difference]: With dead ends: 1483 [2021-06-05 03:18:58,846 INFO L226 Difference]: Without dead ends: 1331 [2021-06-05 03:18:58,846 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:18:58,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2021-06-05 03:18:58,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1273. [2021-06-05 03:18:58,857 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 03:18:58,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 3449 transitions. [2021-06-05 03:18:58,858 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 3449 transitions. Word has length 26 [2021-06-05 03:18:58,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:58,858 INFO L482 AbstractCegarLoop]: Abstraction has 1273 states and 3449 transitions. [2021-06-05 03:18:58,858 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 03:18:58,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 3449 transitions. [2021-06-05 03:18:58,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:58,859 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:58,860 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:58,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-06-05 03:18:58,860 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:58,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:58,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1272735976, now seen corresponding path program 251 times [2021-06-05 03:18:58,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:58,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783324985] [2021-06-05 03:18:58,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:58,924 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 03:18:58,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:58,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783324985] [2021-06-05 03:18:58,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783324985] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:58,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:58,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:58,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31100356] [2021-06-05 03:18:58,925 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:58,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:58,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:58,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:58,925 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 03:18:59,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:59,082 INFO L93 Difference]: Finished difference Result 1455 states and 3899 transitions. [2021-06-05 03:18:59,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:59,082 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:59,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:59,084 INFO L225 Difference]: With dead ends: 1455 [2021-06-05 03:18:59,084 INFO L226 Difference]: Without dead ends: 1330 [2021-06-05 03:18:59,084 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:59,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-06-05 03:18:59,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1247. [2021-06-05 03:18:59,095 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 03:18:59,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3387 transitions. [2021-06-05 03:18:59,096 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3387 transitions. Word has length 26 [2021-06-05 03:18:59,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:59,096 INFO L482 AbstractCegarLoop]: Abstraction has 1247 states and 3387 transitions. [2021-06-05 03:18:59,096 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:59,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3387 transitions. [2021-06-05 03:18:59,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:59,097 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:59,097 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 03:18:59,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-06-05 03:18:59,098 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:59,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:59,098 INFO L82 PathProgramCache]: Analyzing trace with hash -630959526, now seen corresponding path program 252 times [2021-06-05 03:18:59,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:59,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462922391] [2021-06-05 03:18:59,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:59,153 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 03:18:59,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:59,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462922391] [2021-06-05 03:18:59,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462922391] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:59,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:59,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:59,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623379763] [2021-06-05 03:18:59,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:59,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:59,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:59,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:59,154 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 03:18:59,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:59,310 INFO L93 Difference]: Finished difference Result 1414 states and 3792 transitions. [2021-06-05 03:18:59,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:59,310 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 03:18:59,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:59,311 INFO L225 Difference]: With dead ends: 1414 [2021-06-05 03:18:59,311 INFO L226 Difference]: Without dead ends: 1315 [2021-06-05 03:18:59,312 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:59,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2021-06-05 03:18:59,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1253. [2021-06-05 03:18:59,322 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 03:18:59,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 3397 transitions. [2021-06-05 03:18:59,324 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 3397 transitions. Word has length 26 [2021-06-05 03:18:59,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:59,324 INFO L482 AbstractCegarLoop]: Abstraction has 1253 states and 3397 transitions. [2021-06-05 03:18:59,324 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 03:18:59,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 3397 transitions. [2021-06-05 03:18:59,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:59,325 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:59,325 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:59,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-06-05 03:18:59,325 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:59,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:59,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1539210662, now seen corresponding path program 253 times [2021-06-05 03:18:59,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:59,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983697122] [2021-06-05 03:18:59,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:59,383 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 03:18:59,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:59,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983697122] [2021-06-05 03:18:59,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983697122] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:59,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:59,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:59,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955711658] [2021-06-05 03:18:59,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:59,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:59,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:59,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:59,384 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 03:18:59,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:59,544 INFO L93 Difference]: Finished difference Result 1410 states and 3784 transitions. [2021-06-05 03:18:59,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:59,544 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:18:59,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:59,546 INFO L225 Difference]: With dead ends: 1410 [2021-06-05 03:18:59,546 INFO L226 Difference]: Without dead ends: 1329 [2021-06-05 03:18:59,546 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:59,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-05 03:18:59,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1256. [2021-06-05 03:18:59,556 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 03:18:59,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 3408 transitions. [2021-06-05 03:18:59,558 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 3408 transitions. Word has length 26 [2021-06-05 03:18:59,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:59,558 INFO L482 AbstractCegarLoop]: Abstraction has 1256 states and 3408 transitions. [2021-06-05 03:18:59,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:59,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 3408 transitions. [2021-06-05 03:18:59,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:59,559 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:59,559 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:59,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-06-05 03:18:59,559 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:59,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:59,560 INFO L82 PathProgramCache]: Analyzing trace with hash -669766054, now seen corresponding path program 254 times [2021-06-05 03:18:59,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:59,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921856031] [2021-06-05 03:18:59,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:59,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:59,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:59,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921856031] [2021-06-05 03:18:59,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921856031] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:59,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:59,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:59,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284493834] [2021-06-05 03:18:59,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:59,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:59,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:59,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:59,617 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 03:18:59,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:59,777 INFO L93 Difference]: Finished difference Result 1435 states and 3835 transitions. [2021-06-05 03:18:59,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:18:59,778 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 03:18:59,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:59,783 INFO L225 Difference]: With dead ends: 1435 [2021-06-05 03:18:59,783 INFO L226 Difference]: Without dead ends: 1329 [2021-06-05 03:18:59,783 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:59,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-05 03:18:59,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1253. [2021-06-05 03:18:59,795 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 03:18:59,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 3397 transitions. [2021-06-05 03:18:59,796 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 3397 transitions. Word has length 26 [2021-06-05 03:18:59,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:59,796 INFO L482 AbstractCegarLoop]: Abstraction has 1253 states and 3397 transitions. [2021-06-05 03:18:59,796 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 03:18:59,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 3397 transitions. [2021-06-05 03:18:59,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:18:59,798 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:59,798 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 03:18:59,798 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-06-05 03:18:59,798 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:59,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:59,798 INFO L82 PathProgramCache]: Analyzing trace with hash -618634696, now seen corresponding path program 255 times [2021-06-05 03:18:59,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:59,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225297598] [2021-06-05 03:18:59,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:59,858 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 03:18:59,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:59,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225297598] [2021-06-05 03:18:59,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225297598] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:18:59,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:18:59,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:18:59,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702489648] [2021-06-05 03:18:59,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:18:59,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:59,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:18:59,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:18:59,859 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 03:19:00,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:00,015 INFO L93 Difference]: Finished difference Result 1387 states and 3720 transitions. [2021-06-05 03:19:00,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:00,016 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:00,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:00,017 INFO L225 Difference]: With dead ends: 1387 [2021-06-05 03:19:00,017 INFO L226 Difference]: Without dead ends: 1291 [2021-06-05 03:19:00,017 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:00,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-06-05 03:19:00,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1238. [2021-06-05 03:19:00,028 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 03:19:00,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3364 transitions. [2021-06-05 03:19:00,030 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3364 transitions. Word has length 26 [2021-06-05 03:19:00,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:00,030 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 3364 transitions. [2021-06-05 03:19:00,030 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:00,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3364 transitions. [2021-06-05 03:19:00,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:00,031 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:00,031 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 03:19:00,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-06-05 03:19:00,031 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:00,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:00,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1127571916, now seen corresponding path program 256 times [2021-06-05 03:19:00,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:00,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80575175] [2021-06-05 03:19:00,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:00,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:00,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:00,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80575175] [2021-06-05 03:19:00,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80575175] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:00,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:00,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:19:00,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460056017] [2021-06-05 03:19:00,091 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:19:00,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:00,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:19:00,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:00,092 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 03:19:00,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:00,217 INFO L93 Difference]: Finished difference Result 1442 states and 3911 transitions. [2021-06-05 03:19:00,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:19:00,217 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 03:19:00,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:00,219 INFO L225 Difference]: With dead ends: 1442 [2021-06-05 03:19:00,219 INFO L226 Difference]: Without dead ends: 1357 [2021-06-05 03:19:00,219 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:00,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2021-06-05 03:19:00,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1252. [2021-06-05 03:19:00,230 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 03:19:00,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3402 transitions. [2021-06-05 03:19:00,231 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3402 transitions. Word has length 26 [2021-06-05 03:19:00,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:00,231 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3402 transitions. [2021-06-05 03:19:00,232 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 03:19:00,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3402 transitions. [2021-06-05 03:19:00,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:00,233 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:00,233 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:00,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-06-05 03:19:00,233 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:00,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:00,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1598466838, now seen corresponding path program 257 times [2021-06-05 03:19:00,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:00,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279132747] [2021-06-05 03:19:00,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:00,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:00,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:00,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279132747] [2021-06-05 03:19:00,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279132747] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:00,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:00,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:19:00,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28900893] [2021-06-05 03:19:00,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:19:00,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:00,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:19:00,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:00,288 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 03:19:00,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:00,419 INFO L93 Difference]: Finished difference Result 1475 states and 4004 transitions. [2021-06-05 03:19:00,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:19:00,419 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 03:19:00,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:00,421 INFO L225 Difference]: With dead ends: 1475 [2021-06-05 03:19:00,421 INFO L226 Difference]: Without dead ends: 1382 [2021-06-05 03:19:00,421 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:00,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-06-05 03:19:00,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1238. [2021-06-05 03:19:00,432 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 03:19:00,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3362 transitions. [2021-06-05 03:19:00,434 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3362 transitions. Word has length 26 [2021-06-05 03:19:00,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:00,434 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 3362 transitions. [2021-06-05 03:19:00,434 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 03:19:00,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3362 transitions. [2021-06-05 03:19:00,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:00,435 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:00,435 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:00,435 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-06-05 03:19:00,435 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:00,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:00,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1852151958, now seen corresponding path program 258 times [2021-06-05 03:19:00,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:00,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796894287] [2021-06-05 03:19:00,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:00,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:00,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796894287] [2021-06-05 03:19:00,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796894287] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:00,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:00,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:00,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142562627] [2021-06-05 03:19:00,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:00,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:00,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:00,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:00,494 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 03:19:00,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:00,657 INFO L93 Difference]: Finished difference Result 1375 states and 3707 transitions. [2021-06-05 03:19:00,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:00,658 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:00,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:00,659 INFO L225 Difference]: With dead ends: 1375 [2021-06-05 03:19:00,659 INFO L226 Difference]: Without dead ends: 1294 [2021-06-05 03:19:00,659 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:00,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-06-05 03:19:00,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1242. [2021-06-05 03:19:00,670 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 03:19:00,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 3377 transitions. [2021-06-05 03:19:00,671 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 3377 transitions. Word has length 26 [2021-06-05 03:19:00,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:00,672 INFO L482 AbstractCegarLoop]: Abstraction has 1242 states and 3377 transitions. [2021-06-05 03:19:00,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:00,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 3377 transitions. [2021-06-05 03:19:00,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:00,673 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:00,673 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:00,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-06-05 03:19:00,673 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:00,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:00,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1573370730, now seen corresponding path program 259 times [2021-06-05 03:19:00,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:00,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662531580] [2021-06-05 03:19:00,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:00,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:00,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662531580] [2021-06-05 03:19:00,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662531580] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:00,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:00,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:00,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328660803] [2021-06-05 03:19:00,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:00,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:00,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:00,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:00,730 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 03:19:00,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:00,888 INFO L93 Difference]: Finished difference Result 1385 states and 3725 transitions. [2021-06-05 03:19:00,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:00,889 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:00,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:00,890 INFO L225 Difference]: With dead ends: 1385 [2021-06-05 03:19:00,890 INFO L226 Difference]: Without dead ends: 1288 [2021-06-05 03:19:00,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:00,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2021-06-05 03:19:00,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1243. [2021-06-05 03:19:00,901 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 03:19:00,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 3379 transitions. [2021-06-05 03:19:00,902 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 3379 transitions. Word has length 26 [2021-06-05 03:19:00,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:00,902 INFO L482 AbstractCegarLoop]: Abstraction has 1243 states and 3379 transitions. [2021-06-05 03:19:00,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:00,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 3379 transitions. [2021-06-05 03:19:00,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:00,903 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:00,904 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 03:19:00,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-06-05 03:19:00,904 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:00,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:00,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1252885336, now seen corresponding path program 260 times [2021-06-05 03:19:00,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:00,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504605798] [2021-06-05 03:19:00,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:00,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:00,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:00,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504605798] [2021-06-05 03:19:00,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504605798] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:00,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:00,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:00,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974209796] [2021-06-05 03:19:00,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:00,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:00,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:00,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:00,961 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 03:19:01,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:01,123 INFO L93 Difference]: Finished difference Result 1363 states and 3672 transitions. [2021-06-05 03:19:01,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:01,123 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:01,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:01,124 INFO L225 Difference]: With dead ends: 1363 [2021-06-05 03:19:01,124 INFO L226 Difference]: Without dead ends: 1274 [2021-06-05 03:19:01,124 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:01,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-06-05 03:19:01,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1247. [2021-06-05 03:19:01,135 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 03:19:01,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3390 transitions. [2021-06-05 03:19:01,136 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3390 transitions. Word has length 26 [2021-06-05 03:19:01,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:01,137 INFO L482 AbstractCegarLoop]: Abstraction has 1247 states and 3390 transitions. [2021-06-05 03:19:01,137 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 03:19:01,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3390 transitions. [2021-06-05 03:19:01,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:01,138 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:01,138 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:01,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-06-05 03:19:01,138 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:01,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:01,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1266038908, now seen corresponding path program 261 times [2021-06-05 03:19:01,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:01,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658696735] [2021-06-05 03:19:01,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:01,195 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 03:19:01,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:01,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658696735] [2021-06-05 03:19:01,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658696735] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:01,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:01,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:01,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141375984] [2021-06-05 03:19:01,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:01,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:01,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:01,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:01,196 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 03:19:01,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:01,355 INFO L93 Difference]: Finished difference Result 1378 states and 3704 transitions. [2021-06-05 03:19:01,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:01,355 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 03:19:01,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:01,357 INFO L225 Difference]: With dead ends: 1378 [2021-06-05 03:19:01,357 INFO L226 Difference]: Without dead ends: 1269 [2021-06-05 03:19:01,357 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:01,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2021-06-05 03:19:01,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1243. [2021-06-05 03:19:01,367 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 03:19:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 3376 transitions. [2021-06-05 03:19:01,369 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 3376 transitions. Word has length 26 [2021-06-05 03:19:01,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:01,369 INFO L482 AbstractCegarLoop]: Abstraction has 1243 states and 3376 transitions. [2021-06-05 03:19:01,369 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 03:19:01,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 3376 transitions. [2021-06-05 03:19:01,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:01,370 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:01,370 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 03:19:01,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-06-05 03:19:01,370 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:01,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:01,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1645343992, now seen corresponding path program 262 times [2021-06-05 03:19:01,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:01,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283115102] [2021-06-05 03:19:01,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:01,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:01,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283115102] [2021-06-05 03:19:01,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283115102] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:01,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:01,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:01,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785039486] [2021-06-05 03:19:01,427 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:01,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:01,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:01,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:01,427 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 03:19:01,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:01,589 INFO L93 Difference]: Finished difference Result 1384 states and 3725 transitions. [2021-06-05 03:19:01,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:01,589 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 03:19:01,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:01,591 INFO L225 Difference]: With dead ends: 1384 [2021-06-05 03:19:01,591 INFO L226 Difference]: Without dead ends: 1303 [2021-06-05 03:19:01,591 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:01,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-06-05 03:19:01,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1245. [2021-06-05 03:19:01,601 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 03:19:01,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3383 transitions. [2021-06-05 03:19:01,603 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3383 transitions. Word has length 26 [2021-06-05 03:19:01,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:01,603 INFO L482 AbstractCegarLoop]: Abstraction has 1245 states and 3383 transitions. [2021-06-05 03:19:01,603 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 03:19:01,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3383 transitions. [2021-06-05 03:19:01,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:01,604 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:01,604 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 03:19:01,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-06-05 03:19:01,604 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:01,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:01,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1780178696, now seen corresponding path program 263 times [2021-06-05 03:19:01,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:01,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275503733] [2021-06-05 03:19:01,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:01,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:01,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:01,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275503733] [2021-06-05 03:19:01,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275503733] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:01,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:01,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:01,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653007940] [2021-06-05 03:19:01,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:01,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:01,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:01,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:01,694 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 03:19:01,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:01,854 INFO L93 Difference]: Finished difference Result 1389 states and 3727 transitions. [2021-06-05 03:19:01,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:01,854 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:01,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:01,856 INFO L225 Difference]: With dead ends: 1389 [2021-06-05 03:19:01,856 INFO L226 Difference]: Without dead ends: 1292 [2021-06-05 03:19:01,856 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:01,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-06-05 03:19:01,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1241. [2021-06-05 03:19:01,867 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 03:19:01,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 3368 transitions. [2021-06-05 03:19:01,868 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 3368 transitions. Word has length 26 [2021-06-05 03:19:01,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:01,868 INFO L482 AbstractCegarLoop]: Abstraction has 1241 states and 3368 transitions. [2021-06-05 03:19:01,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:01,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 3368 transitions. [2021-06-05 03:19:01,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:01,869 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:01,869 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:01,869 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-06-05 03:19:01,870 INFO L430 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:01,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:01,870 INFO L82 PathProgramCache]: Analyzing trace with hash 140505174, now seen corresponding path program 264 times [2021-06-05 03:19:01,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:01,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755639649] [2021-06-05 03:19:01,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:01,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:01,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:01,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755639649] [2021-06-05 03:19:01,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755639649] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:01,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:01,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:01,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62716106] [2021-06-05 03:19:01,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:01,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:01,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:01,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:01,930 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 03:19:02,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:02,091 INFO L93 Difference]: Finished difference Result 1366 states and 3673 transitions. [2021-06-05 03:19:02,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:02,092 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:02,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:02,093 INFO L225 Difference]: With dead ends: 1366 [2021-06-05 03:19:02,093 INFO L226 Difference]: Without dead ends: 1279 [2021-06-05 03:19:02,094 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:02,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2021-06-05 03:19:02,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1242. [2021-06-05 03:19:02,105 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 03:19:02,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 3369 transitions. [2021-06-05 03:19:02,106 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 3369 transitions. Word has length 26 [2021-06-05 03:19:02,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:02,106 INFO L482 AbstractCegarLoop]: Abstraction has 1242 states and 3369 transitions. [2021-06-05 03:19:02,106 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 03:19:02,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 3369 transitions. [2021-06-05 03:19:02,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:02,107 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:02,107 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 03:19:02,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-06-05 03:19:02,108 INFO L430 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:02,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:02,108 INFO L82 PathProgramCache]: Analyzing trace with hash -2034524430, now seen corresponding path program 265 times [2021-06-05 03:19:02,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:02,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016513012] [2021-06-05 03:19:02,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:02,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:02,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:02,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016513012] [2021-06-05 03:19:02,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016513012] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:02,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:02,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:02,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166000833] [2021-06-05 03:19:02,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:02,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:02,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:02,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:02,168 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 03:19:02,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:02,337 INFO L93 Difference]: Finished difference Result 1386 states and 3719 transitions. [2021-06-05 03:19:02,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:02,337 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:02,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:02,339 INFO L225 Difference]: With dead ends: 1386 [2021-06-05 03:19:02,339 INFO L226 Difference]: Without dead ends: 1281 [2021-06-05 03:19:02,339 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 03:19:02,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-06-05 03:19:02,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1236. [2021-06-05 03:19:02,349 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 03:19:02,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 3354 transitions. [2021-06-05 03:19:02,351 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 3354 transitions. Word has length 26 [2021-06-05 03:19:02,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:02,351 INFO L482 AbstractCegarLoop]: Abstraction has 1236 states and 3354 transitions. [2021-06-05 03:19:02,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:02,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 3354 transitions. [2021-06-05 03:19:02,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:02,352 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:02,352 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:02,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-06-05 03:19:02,352 INFO L430 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:02,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:02,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1529663814, now seen corresponding path program 266 times [2021-06-05 03:19:02,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:02,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071667231] [2021-06-05 03:19:02,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:02,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:02,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071667231] [2021-06-05 03:19:02,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071667231] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:02,409 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:02,409 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:02,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650537056] [2021-06-05 03:19:02,409 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:02,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:02,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:02,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:02,409 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 03:19:02,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:02,568 INFO L93 Difference]: Finished difference Result 1442 states and 3908 transitions. [2021-06-05 03:19:02,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:02,569 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 03:19:02,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:02,570 INFO L225 Difference]: With dead ends: 1442 [2021-06-05 03:19:02,570 INFO L226 Difference]: Without dead ends: 1351 [2021-06-05 03:19:02,570 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:02,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-06-05 03:19:02,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1238. [2021-06-05 03:19:02,581 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 03:19:02,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3356 transitions. [2021-06-05 03:19:02,583 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3356 transitions. Word has length 26 [2021-06-05 03:19:02,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:02,583 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 3356 transitions. [2021-06-05 03:19:02,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:02,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3356 transitions. [2021-06-05 03:19:02,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:02,584 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:02,584 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:02,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-06-05 03:19:02,584 INFO L430 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:02,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:02,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1373158936, now seen corresponding path program 267 times [2021-06-05 03:19:02,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:02,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081237990] [2021-06-05 03:19:02,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:02,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:02,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:02,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081237990] [2021-06-05 03:19:02,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081237990] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:02,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:02,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:02,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100629974] [2021-06-05 03:19:02,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:02,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:02,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:02,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:02,642 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 03:19:02,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:02,805 INFO L93 Difference]: Finished difference Result 1473 states and 3992 transitions. [2021-06-05 03:19:02,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:02,806 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 03:19:02,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:02,807 INFO L225 Difference]: With dead ends: 1473 [2021-06-05 03:19:02,807 INFO L226 Difference]: Without dead ends: 1381 [2021-06-05 03:19:02,807 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2021-06-05 03:19:02,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1234. [2021-06-05 03:19:02,818 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 03:19:02,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3342 transitions. [2021-06-05 03:19:02,820 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3342 transitions. Word has length 26 [2021-06-05 03:19:02,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:02,820 INFO L482 AbstractCegarLoop]: Abstraction has 1234 states and 3342 transitions. [2021-06-05 03:19:02,820 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 03:19:02,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3342 transitions. [2021-06-05 03:19:02,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:02,821 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:02,821 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:02,821 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-06-05 03:19:02,821 INFO L430 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:02,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:02,821 INFO L82 PathProgramCache]: Analyzing trace with hash 998145596, now seen corresponding path program 268 times [2021-06-05 03:19:02,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:02,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704320707] [2021-06-05 03:19:02,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:02,875 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 03:19:02,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:02,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704320707] [2021-06-05 03:19:02,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704320707] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:02,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:02,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:19:02,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608509124] [2021-06-05 03:19:02,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:19:02,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:02,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:19:02,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:02,876 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 03:19:03,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:03,001 INFO L93 Difference]: Finished difference Result 1450 states and 3914 transitions. [2021-06-05 03:19:03,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:19:03,001 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 03:19:03,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:03,003 INFO L225 Difference]: With dead ends: 1450 [2021-06-05 03:19:03,003 INFO L226 Difference]: Without dead ends: 1359 [2021-06-05 03:19:03,003 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:03,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2021-06-05 03:19:03,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1260. [2021-06-05 03:19:03,014 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 03:19:03,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 3414 transitions. [2021-06-05 03:19:03,015 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 3414 transitions. Word has length 26 [2021-06-05 03:19:03,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:03,015 INFO L482 AbstractCegarLoop]: Abstraction has 1260 states and 3414 transitions. [2021-06-05 03:19:03,015 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 03:19:03,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 3414 transitions. [2021-06-05 03:19:03,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:03,017 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:03,017 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:03,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-06-05 03:19:03,017 INFO L430 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:03,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:03,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1867590204, now seen corresponding path program 269 times [2021-06-05 03:19:03,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:03,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084948250] [2021-06-05 03:19:03,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:03,073 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 03:19:03,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:03,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084948250] [2021-06-05 03:19:03,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084948250] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:03,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:03,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:03,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801168907] [2021-06-05 03:19:03,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:03,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:03,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:03,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:03,074 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 03:19:03,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:03,228 INFO L93 Difference]: Finished difference Result 1501 states and 4029 transitions. [2021-06-05 03:19:03,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:03,229 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:03,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:03,230 INFO L225 Difference]: With dead ends: 1501 [2021-06-05 03:19:03,230 INFO L226 Difference]: Without dead ends: 1304 [2021-06-05 03:19:03,230 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:03,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-06-05 03:19:03,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1244. [2021-06-05 03:19:03,241 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 03:19:03,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3349 transitions. [2021-06-05 03:19:03,242 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3349 transitions. Word has length 26 [2021-06-05 03:19:03,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:03,242 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3349 transitions. [2021-06-05 03:19:03,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:03,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3349 transitions. [2021-06-05 03:19:03,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:03,244 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:03,244 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:03,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-06-05 03:19:03,244 INFO L430 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:03,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:03,244 INFO L82 PathProgramCache]: Analyzing trace with hash -719595174, now seen corresponding path program 270 times [2021-06-05 03:19:03,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:03,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311093014] [2021-06-05 03:19:03,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:03,309 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:03,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311093014] [2021-06-05 03:19:03,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311093014] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:03,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:03,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:03,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452896305] [2021-06-05 03:19:03,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:03,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:03,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:03,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:03,310 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 03:19:03,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:03,485 INFO L93 Difference]: Finished difference Result 1399 states and 3720 transitions. [2021-06-05 03:19:03,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:03,486 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:03,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:03,487 INFO L225 Difference]: With dead ends: 1399 [2021-06-05 03:19:03,487 INFO L226 Difference]: Without dead ends: 1304 [2021-06-05 03:19:03,487 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:03,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-06-05 03:19:03,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1244. [2021-06-05 03:19:03,498 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 03:19:03,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3349 transitions. [2021-06-05 03:19:03,499 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3349 transitions. Word has length 26 [2021-06-05 03:19:03,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:03,499 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3349 transitions. [2021-06-05 03:19:03,499 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 03:19:03,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3349 transitions. [2021-06-05 03:19:03,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:03,500 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:03,500 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 03:19:03,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-06-05 03:19:03,501 INFO L430 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:03,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:03,501 INFO L82 PathProgramCache]: Analyzing trace with hash 149849434, now seen corresponding path program 271 times [2021-06-05 03:19:03,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:03,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191632170] [2021-06-05 03:19:03,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:03,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:03,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:03,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191632170] [2021-06-05 03:19:03,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191632170] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:03,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:03,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:03,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468819267] [2021-06-05 03:19:03,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:03,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:03,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:03,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:03,567 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 03:19:03,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:03,726 INFO L93 Difference]: Finished difference Result 1389 states and 3693 transitions. [2021-06-05 03:19:03,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:03,727 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:03,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:03,728 INFO L225 Difference]: With dead ends: 1389 [2021-06-05 03:19:03,728 INFO L226 Difference]: Without dead ends: 1292 [2021-06-05 03:19:03,728 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 03:19:03,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-06-05 03:19:03,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1244. [2021-06-05 03:19:03,739 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 03:19:03,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3347 transitions. [2021-06-05 03:19:03,740 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3347 transitions. Word has length 26 [2021-06-05 03:19:03,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:03,740 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3347 transitions. [2021-06-05 03:19:03,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:03,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3347 transitions. [2021-06-05 03:19:03,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:03,741 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:03,741 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 03:19:03,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-06-05 03:19:03,741 INFO L430 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:03,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:03,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1305708224, now seen corresponding path program 272 times [2021-06-05 03:19:03,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:03,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375430616] [2021-06-05 03:19:03,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:03,807 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 03:19:03,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:03,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375430616] [2021-06-05 03:19:03,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375430616] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:03,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:03,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:03,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976796310] [2021-06-05 03:19:03,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:03,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:03,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:03,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:03,807 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 03:19:03,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:03,969 INFO L93 Difference]: Finished difference Result 1371 states and 3646 transitions. [2021-06-05 03:19:03,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:03,969 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:03,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:03,971 INFO L225 Difference]: With dead ends: 1371 [2021-06-05 03:19:03,971 INFO L226 Difference]: Without dead ends: 1266 [2021-06-05 03:19:03,971 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 03:19:03,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2021-06-05 03:19:03,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1232. [2021-06-05 03:19:03,981 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 03:19:03,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3323 transitions. [2021-06-05 03:19:03,983 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3323 transitions. Word has length 26 [2021-06-05 03:19:03,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:03,983 INFO L482 AbstractCegarLoop]: Abstraction has 1232 states and 3323 transitions. [2021-06-05 03:19:03,983 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 03:19:03,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3323 transitions. [2021-06-05 03:19:03,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:03,984 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:03,984 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 03:19:03,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-06-05 03:19:03,984 INFO L430 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:03,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:03,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1117934054, now seen corresponding path program 273 times [2021-06-05 03:19:03,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:03,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287809703] [2021-06-05 03:19:03,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:04,039 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 03:19:04,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:04,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287809703] [2021-06-05 03:19:04,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287809703] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:04,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:04,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:19:04,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900295710] [2021-06-05 03:19:04,039 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:19:04,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:04,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:19:04,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:04,040 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 03:19:04,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:04,164 INFO L93 Difference]: Finished difference Result 1470 states and 3952 transitions. [2021-06-05 03:19:04,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:19:04,165 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 03:19:04,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:04,166 INFO L225 Difference]: With dead ends: 1470 [2021-06-05 03:19:04,166 INFO L226 Difference]: Without dead ends: 1389 [2021-06-05 03:19:04,166 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 03:19:04,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2021-06-05 03:19:04,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1270. [2021-06-05 03:19:04,177 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 03:19:04,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 3430 transitions. [2021-06-05 03:19:04,179 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 3430 transitions. Word has length 26 [2021-06-05 03:19:04,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:04,179 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 3430 transitions. [2021-06-05 03:19:04,179 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 03:19:04,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 3430 transitions. [2021-06-05 03:19:04,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:04,180 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:04,180 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:04,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-06-05 03:19:04,180 INFO L430 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:04,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:04,180 INFO L82 PathProgramCache]: Analyzing trace with hash -248489446, now seen corresponding path program 274 times [2021-06-05 03:19:04,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:04,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806768716] [2021-06-05 03:19:04,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:04,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:04,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:04,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806768716] [2021-06-05 03:19:04,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806768716] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:04,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:04,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:04,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772830022] [2021-06-05 03:19:04,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:04,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:04,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:04,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:04,237 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 03:19:04,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:04,392 INFO L93 Difference]: Finished difference Result 1525 states and 4077 transitions. [2021-06-05 03:19:04,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:04,392 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 03:19:04,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:04,394 INFO L225 Difference]: With dead ends: 1525 [2021-06-05 03:19:04,394 INFO L226 Difference]: Without dead ends: 1330 [2021-06-05 03:19:04,394 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:04,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-06-05 03:19:04,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1232. [2021-06-05 03:19:04,404 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 03:19:04,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3311 transitions. [2021-06-05 03:19:04,406 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3311 transitions. Word has length 26 [2021-06-05 03:19:04,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:04,406 INFO L482 AbstractCegarLoop]: Abstraction has 1232 states and 3311 transitions. [2021-06-05 03:19:04,406 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:04,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3311 transitions. [2021-06-05 03:19:04,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:04,407 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:04,407 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:04,407 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-06-05 03:19:04,407 INFO L430 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:04,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:04,407 INFO L82 PathProgramCache]: Analyzing trace with hash -236549542, now seen corresponding path program 275 times [2021-06-05 03:19:04,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:04,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868629653] [2021-06-05 03:19:04,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:04,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:04,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:04,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868629653] [2021-06-05 03:19:04,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868629653] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:04,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:04,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:04,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555405385] [2021-06-05 03:19:04,466 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:04,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:04,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:04,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:04,466 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 03:19:04,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:04,627 INFO L93 Difference]: Finished difference Result 1421 states and 3771 transitions. [2021-06-05 03:19:04,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:04,627 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:04,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:04,629 INFO L225 Difference]: With dead ends: 1421 [2021-06-05 03:19:04,629 INFO L226 Difference]: Without dead ends: 1334 [2021-06-05 03:19:04,629 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 03:19:04,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-06-05 03:19:04,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1222. [2021-06-05 03:19:04,640 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 03:19:04,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 3287 transitions. [2021-06-05 03:19:04,641 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 3287 transitions. Word has length 26 [2021-06-05 03:19:04,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:04,641 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 3287 transitions. [2021-06-05 03:19:04,641 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:04,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 3287 transitions. [2021-06-05 03:19:04,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:04,642 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:04,642 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:04,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-06-05 03:19:04,642 INFO L430 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:04,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:04,643 INFO L82 PathProgramCache]: Analyzing trace with hash 632895066, now seen corresponding path program 276 times [2021-06-05 03:19:04,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:04,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908166981] [2021-06-05 03:19:04,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:04,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:04,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908166981] [2021-06-05 03:19:04,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908166981] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:04,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:04,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:04,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887931178] [2021-06-05 03:19:04,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:04,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:04,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:04,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:04,699 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 03:19:04,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:04,865 INFO L93 Difference]: Finished difference Result 1394 states and 3706 transitions. [2021-06-05 03:19:04,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:04,865 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:04,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:04,867 INFO L225 Difference]: With dead ends: 1394 [2021-06-05 03:19:04,867 INFO L226 Difference]: Without dead ends: 1297 [2021-06-05 03:19:04,867 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:04,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-06-05 03:19:04,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1237. [2021-06-05 03:19:04,877 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 03:19:04,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 3323 transitions. [2021-06-05 03:19:04,879 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 3323 transitions. Word has length 26 [2021-06-05 03:19:04,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:04,879 INFO L482 AbstractCegarLoop]: Abstraction has 1237 states and 3323 transitions. [2021-06-05 03:19:04,879 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:04,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 3323 transitions. [2021-06-05 03:19:04,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:04,880 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:04,880 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:04,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-06-05 03:19:04,880 INFO L430 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:04,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:04,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1445097654, now seen corresponding path program 277 times [2021-06-05 03:19:04,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:04,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877916340] [2021-06-05 03:19:04,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:04,937 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 03:19:04,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:04,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877916340] [2021-06-05 03:19:04,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877916340] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:04,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:04,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:04,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776671995] [2021-06-05 03:19:04,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:04,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:04,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:04,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:04,938 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 03:19:05,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:05,107 INFO L93 Difference]: Finished difference Result 1383 states and 3684 transitions. [2021-06-05 03:19:05,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:05,107 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 03:19:05,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:05,109 INFO L225 Difference]: With dead ends: 1383 [2021-06-05 03:19:05,109 INFO L226 Difference]: Without dead ends: 1281 [2021-06-05 03:19:05,109 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:05,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-06-05 03:19:05,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1234. [2021-06-05 03:19:05,119 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 03:19:05,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3315 transitions. [2021-06-05 03:19:05,121 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3315 transitions. Word has length 26 [2021-06-05 03:19:05,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:05,121 INFO L482 AbstractCegarLoop]: Abstraction has 1234 states and 3315 transitions. [2021-06-05 03:19:05,121 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:05,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3315 transitions. [2021-06-05 03:19:05,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:05,122 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:05,122 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:05,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-06-05 03:19:05,122 INFO L430 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:05,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:05,122 INFO L82 PathProgramCache]: Analyzing trace with hash 415683934, now seen corresponding path program 278 times [2021-06-05 03:19:05,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:05,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995105458] [2021-06-05 03:19:05,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:05,178 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 03:19:05,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:05,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995105458] [2021-06-05 03:19:05,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995105458] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:05,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:05,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:05,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627626113] [2021-06-05 03:19:05,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:05,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:05,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:05,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:05,178 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 03:19:05,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:05,332 INFO L93 Difference]: Finished difference Result 1413 states and 3754 transitions. [2021-06-05 03:19:05,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:05,332 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 03:19:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:05,334 INFO L225 Difference]: With dead ends: 1413 [2021-06-05 03:19:05,334 INFO L226 Difference]: Without dead ends: 1284 [2021-06-05 03:19:05,334 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:05,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2021-06-05 03:19:05,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1234. [2021-06-05 03:19:05,344 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 03:19:05,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3311 transitions. [2021-06-05 03:19:05,346 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3311 transitions. Word has length 26 [2021-06-05 03:19:05,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:05,346 INFO L482 AbstractCegarLoop]: Abstraction has 1234 states and 3311 transitions. [2021-06-05 03:19:05,346 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 03:19:05,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3311 transitions. [2021-06-05 03:19:05,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:05,347 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:05,347 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 03:19:05,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-06-05 03:19:05,347 INFO L430 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:05,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:05,348 INFO L82 PathProgramCache]: Analyzing trace with hash -444631560, now seen corresponding path program 279 times [2021-06-05 03:19:05,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:05,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793634582] [2021-06-05 03:19:05,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:05,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:05,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:05,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793634582] [2021-06-05 03:19:05,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793634582] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:05,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:05,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:05,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896613779] [2021-06-05 03:19:05,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:05,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:05,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:05,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:05,416 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 03:19:05,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:05,577 INFO L93 Difference]: Finished difference Result 1364 states and 3627 transitions. [2021-06-05 03:19:05,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:05,578 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:05,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:05,579 INFO L225 Difference]: With dead ends: 1364 [2021-06-05 03:19:05,579 INFO L226 Difference]: Without dead ends: 1283 [2021-06-05 03:19:05,579 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:05,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-06-05 03:19:05,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1235. [2021-06-05 03:19:05,589 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 03:19:05,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 3315 transitions. [2021-06-05 03:19:05,591 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 3315 transitions. Word has length 26 [2021-06-05 03:19:05,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:05,591 INFO L482 AbstractCegarLoop]: Abstraction has 1235 states and 3315 transitions. [2021-06-05 03:19:05,591 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:05,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 3315 transitions. [2021-06-05 03:19:05,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:05,592 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:05,592 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:05,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-06-05 03:19:05,592 INFO L430 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:05,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:05,593 INFO L82 PathProgramCache]: Analyzing trace with hash 424813048, now seen corresponding path program 280 times [2021-06-05 03:19:05,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:05,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603674922] [2021-06-05 03:19:05,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:05,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:05,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603674922] [2021-06-05 03:19:05,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603674922] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:05,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:05,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:05,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548087927] [2021-06-05 03:19:05,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:05,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:05,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:05,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:05,651 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 03:19:05,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:05,812 INFO L93 Difference]: Finished difference Result 1374 states and 3654 transitions. [2021-06-05 03:19:05,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:05,813 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:05,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:05,814 INFO L225 Difference]: With dead ends: 1374 [2021-06-05 03:19:05,814 INFO L226 Difference]: Without dead ends: 1277 [2021-06-05 03:19:05,814 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 03:19:05,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2021-06-05 03:19:05,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1236. [2021-06-05 03:19:05,825 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 03:19:05,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 3317 transitions. [2021-06-05 03:19:05,826 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 3317 transitions. Word has length 26 [2021-06-05 03:19:05,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:05,826 INFO L482 AbstractCegarLoop]: Abstraction has 1236 states and 3317 transitions. [2021-06-05 03:19:05,826 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:05,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 3317 transitions. [2021-06-05 03:19:05,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:05,827 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:05,827 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 03:19:05,828 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-06-05 03:19:05,828 INFO L430 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:05,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:05,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1043898182, now seen corresponding path program 281 times [2021-06-05 03:19:05,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:05,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556871346] [2021-06-05 03:19:05,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:05,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:05,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556871346] [2021-06-05 03:19:05,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556871346] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:05,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:05,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:05,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926843145] [2021-06-05 03:19:05,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:05,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:05,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:05,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:05,898 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 03:19:06,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:06,070 INFO L93 Difference]: Finished difference Result 1361 states and 3614 transitions. [2021-06-05 03:19:06,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:06,070 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:06,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:06,072 INFO L225 Difference]: With dead ends: 1361 [2021-06-05 03:19:06,072 INFO L226 Difference]: Without dead ends: 1270 [2021-06-05 03:19:06,072 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 03:19:06,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-06-05 03:19:06,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1230. [2021-06-05 03:19:06,082 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 03:19:06,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 3293 transitions. [2021-06-05 03:19:06,084 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 3293 transitions. Word has length 26 [2021-06-05 03:19:06,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:06,084 INFO L482 AbstractCegarLoop]: Abstraction has 1230 states and 3293 transitions. [2021-06-05 03:19:06,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:06,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 3293 transitions. [2021-06-05 03:19:06,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:06,085 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:06,085 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:06,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-06-05 03:19:06,085 INFO L430 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:06,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:06,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1030744610, now seen corresponding path program 282 times [2021-06-05 03:19:06,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:06,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706171514] [2021-06-05 03:19:06,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:06,162 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 03:19:06,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:06,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706171514] [2021-06-05 03:19:06,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706171514] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:06,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:06,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:06,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132238974] [2021-06-05 03:19:06,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:06,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:06,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:06,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:06,163 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 03:19:06,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:06,327 INFO L93 Difference]: Finished difference Result 1343 states and 3570 transitions. [2021-06-05 03:19:06,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:06,327 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 03:19:06,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:06,329 INFO L225 Difference]: With dead ends: 1343 [2021-06-05 03:19:06,329 INFO L226 Difference]: Without dead ends: 1244 [2021-06-05 03:19:06,329 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:06,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2021-06-05 03:19:06,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1229. [2021-06-05 03:19:06,339 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 03:19:06,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 3292 transitions. [2021-06-05 03:19:06,341 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 3292 transitions. Word has length 26 [2021-06-05 03:19:06,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:06,341 INFO L482 AbstractCegarLoop]: Abstraction has 1229 states and 3292 transitions. [2021-06-05 03:19:06,341 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:06,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 3292 transitions. [2021-06-05 03:19:06,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:06,342 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:06,342 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:06,342 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-06-05 03:19:06,342 INFO L430 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:06,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:06,342 INFO L82 PathProgramCache]: Analyzing trace with hash -651439526, now seen corresponding path program 283 times [2021-06-05 03:19:06,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:06,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704950774] [2021-06-05 03:19:06,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:06,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:06,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:06,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704950774] [2021-06-05 03:19:06,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704950774] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:06,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:06,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:06,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663761170] [2021-06-05 03:19:06,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:06,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:06,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:06,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:06,402 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 03:19:06,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:06,563 INFO L93 Difference]: Finished difference Result 1364 states and 3621 transitions. [2021-06-05 03:19:06,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:06,563 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:06,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:06,565 INFO L225 Difference]: With dead ends: 1364 [2021-06-05 03:19:06,565 INFO L226 Difference]: Without dead ends: 1283 [2021-06-05 03:19:06,565 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:06,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-06-05 03:19:06,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1229. [2021-06-05 03:19:06,575 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 03:19:06,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 3294 transitions. [2021-06-05 03:19:06,576 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 3294 transitions. Word has length 26 [2021-06-05 03:19:06,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:06,577 INFO L482 AbstractCegarLoop]: Abstraction has 1229 states and 3294 transitions. [2021-06-05 03:19:06,577 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 03:19:06,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 3294 transitions. [2021-06-05 03:19:06,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:06,578 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:06,578 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:06,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-06-05 03:19:06,578 INFO L430 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:06,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:06,578 INFO L82 PathProgramCache]: Analyzing trace with hash 218005082, now seen corresponding path program 284 times [2021-06-05 03:19:06,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:06,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118636984] [2021-06-05 03:19:06,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:06,637 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 03:19:06,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:06,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118636984] [2021-06-05 03:19:06,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118636984] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:06,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:06,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:06,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658709840] [2021-06-05 03:19:06,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:06,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:06,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:06,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:06,638 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 03:19:06,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:06,814 INFO L93 Difference]: Finished difference Result 1372 states and 3640 transitions. [2021-06-05 03:19:06,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:06,814 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:06,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:06,816 INFO L225 Difference]: With dead ends: 1372 [2021-06-05 03:19:06,816 INFO L226 Difference]: Without dead ends: 1275 [2021-06-05 03:19:06,816 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:06,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2021-06-05 03:19:06,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1228. [2021-06-05 03:19:06,826 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 03:19:06,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 3287 transitions. [2021-06-05 03:19:06,827 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 3287 transitions. Word has length 26 [2021-06-05 03:19:06,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:06,827 INFO L482 AbstractCegarLoop]: Abstraction has 1228 states and 3287 transitions. [2021-06-05 03:19:06,827 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 03:19:06,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 3287 transitions. [2021-06-05 03:19:06,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:06,829 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:06,829 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 03:19:06,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-06-05 03:19:06,829 INFO L430 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:06,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:06,829 INFO L82 PathProgramCache]: Analyzing trace with hash 2138688952, now seen corresponding path program 285 times [2021-06-05 03:19:06,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:06,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291441812] [2021-06-05 03:19:06,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:06,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:06,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291441812] [2021-06-05 03:19:06,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291441812] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:06,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:06,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:06,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206270925] [2021-06-05 03:19:06,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:06,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:06,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:06,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:06,895 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 03:19:07,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:07,068 INFO L93 Difference]: Finished difference Result 1374 states and 3642 transitions. [2021-06-05 03:19:07,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:07,068 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 03:19:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:07,070 INFO L225 Difference]: With dead ends: 1374 [2021-06-05 03:19:07,070 INFO L226 Difference]: Without dead ends: 1287 [2021-06-05 03:19:07,070 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 03:19:07,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-06-05 03:19:07,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1225. [2021-06-05 03:19:07,080 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 03:19:07,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 3275 transitions. [2021-06-05 03:19:07,082 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 3275 transitions. Word has length 26 [2021-06-05 03:19:07,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:07,082 INFO L482 AbstractCegarLoop]: Abstraction has 1225 states and 3275 transitions. [2021-06-05 03:19:07,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:07,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 3275 transitions. [2021-06-05 03:19:07,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:07,083 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:07,083 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:07,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-06-05 03:19:07,083 INFO L430 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:07,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:07,083 INFO L82 PathProgramCache]: Analyzing trace with hash -36340652, now seen corresponding path program 286 times [2021-06-05 03:19:07,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:07,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930991968] [2021-06-05 03:19:07,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:07,152 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 03:19:07,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:07,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930991968] [2021-06-05 03:19:07,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930991968] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:07,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:07,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:07,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99949062] [2021-06-05 03:19:07,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:07,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:07,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:07,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:07,153 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 03:19:07,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:07,328 INFO L93 Difference]: Finished difference Result 1354 states and 3596 transitions. [2021-06-05 03:19:07,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:07,329 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 03:19:07,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:07,330 INFO L225 Difference]: With dead ends: 1354 [2021-06-05 03:19:07,330 INFO L226 Difference]: Without dead ends: 1252 [2021-06-05 03:19:07,333 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 03:19:07,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-06-05 03:19:07,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1223. [2021-06-05 03:19:07,344 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 03:19:07,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 3273 transitions. [2021-06-05 03:19:07,345 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 3273 transitions. Word has length 26 [2021-06-05 03:19:07,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:07,345 INFO L482 AbstractCegarLoop]: Abstraction has 1223 states and 3273 transitions. [2021-06-05 03:19:07,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:07,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 3273 transitions. [2021-06-05 03:19:07,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:07,346 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:07,346 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:07,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-06-05 03:19:07,347 INFO L430 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:07,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:07,347 INFO L82 PathProgramCache]: Analyzing trace with hash -2094067648, now seen corresponding path program 287 times [2021-06-05 03:19:07,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:07,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684366940] [2021-06-05 03:19:07,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:07,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:07,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:07,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684366940] [2021-06-05 03:19:07,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684366940] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:07,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:07,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:07,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644447616] [2021-06-05 03:19:07,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:07,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:07,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:07,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:07,406 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 03:19:07,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:07,568 INFO L93 Difference]: Finished difference Result 1345 states and 3575 transitions. [2021-06-05 03:19:07,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:07,568 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:07,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:07,570 INFO L225 Difference]: With dead ends: 1345 [2021-06-05 03:19:07,570 INFO L226 Difference]: Without dead ends: 1248 [2021-06-05 03:19:07,570 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:07,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-06-05 03:19:07,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1222. [2021-06-05 03:19:07,580 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 03:19:07,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 3270 transitions. [2021-06-05 03:19:07,581 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 3270 transitions. Word has length 26 [2021-06-05 03:19:07,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:07,582 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 3270 transitions. [2021-06-05 03:19:07,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:07,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 3270 transitions. [2021-06-05 03:19:07,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:07,583 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:07,583 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:07,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-06-05 03:19:07,583 INFO L430 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:07,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:07,583 INFO L82 PathProgramCache]: Analyzing trace with hash 808755102, now seen corresponding path program 288 times [2021-06-05 03:19:07,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:07,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30194817] [2021-06-05 03:19:07,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:07,639 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 03:19:07,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:07,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30194817] [2021-06-05 03:19:07,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30194817] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:07,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:07,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:07,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888522301] [2021-06-05 03:19:07,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:07,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:07,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:07,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:07,640 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 03:19:07,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:07,803 INFO L93 Difference]: Finished difference Result 1347 states and 3575 transitions. [2021-06-05 03:19:07,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:07,803 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 03:19:07,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:07,805 INFO L225 Difference]: With dead ends: 1347 [2021-06-05 03:19:07,805 INFO L226 Difference]: Without dead ends: 1226 [2021-06-05 03:19:07,805 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:07,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-06-05 03:19:07,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1190. [2021-06-05 03:19:07,815 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 03:19:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 3194 transitions. [2021-06-05 03:19:07,816 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 3194 transitions. Word has length 26 [2021-06-05 03:19:07,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:07,816 INFO L482 AbstractCegarLoop]: Abstraction has 1190 states and 3194 transitions. [2021-06-05 03:19:07,816 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 3194 transitions. [2021-06-05 03:19:07,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:07,817 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:07,818 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 03:19:07,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-06-05 03:19:07,818 INFO L430 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:07,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:07,818 INFO L82 PathProgramCache]: Analyzing trace with hash 934338240, now seen corresponding path program 289 times [2021-06-05 03:19:07,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:07,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147854009] [2021-06-05 03:19:07,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:07,867 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 03:19:07,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:07,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147854009] [2021-06-05 03:19:07,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147854009] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:07,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:07,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:19:07,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785004502] [2021-06-05 03:19:07,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:19:07,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:07,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:19:07,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:07,868 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 03:19:07,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:07,984 INFO L93 Difference]: Finished difference Result 1469 states and 3888 transitions. [2021-06-05 03:19:07,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:19:07,984 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 03:19:07,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:07,986 INFO L225 Difference]: With dead ends: 1469 [2021-06-05 03:19:07,986 INFO L226 Difference]: Without dead ends: 1294 [2021-06-05 03:19:07,986 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:07,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-06-05 03:19:07,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1264. [2021-06-05 03:19:07,997 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 03:19:07,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 3363 transitions. [2021-06-05 03:19:07,998 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 3363 transitions. Word has length 26 [2021-06-05 03:19:07,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:07,998 INFO L482 AbstractCegarLoop]: Abstraction has 1264 states and 3363 transitions. [2021-06-05 03:19:07,998 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 03:19:07,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 3363 transitions. [2021-06-05 03:19:07,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:07,999 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:07,999 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:07,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-06-05 03:19:08,000 INFO L430 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:08,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:08,000 INFO L82 PathProgramCache]: Analyzing trace with hash 26087104, now seen corresponding path program 290 times [2021-06-05 03:19:08,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:08,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321839885] [2021-06-05 03:19:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:08,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:08,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:08,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321839885] [2021-06-05 03:19:08,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321839885] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:08,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:08,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:19:08,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141150429] [2021-06-05 03:19:08,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:19:08,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:08,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:19:08,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:08,047 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 03:19:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:08,168 INFO L93 Difference]: Finished difference Result 1463 states and 3865 transitions. [2021-06-05 03:19:08,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:19:08,169 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 03:19:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:08,170 INFO L225 Difference]: With dead ends: 1463 [2021-06-05 03:19:08,170 INFO L226 Difference]: Without dead ends: 1305 [2021-06-05 03:19:08,170 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:08,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2021-06-05 03:19:08,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1277. [2021-06-05 03:19:08,181 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 03:19:08,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 3382 transitions. [2021-06-05 03:19:08,182 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 3382 transitions. Word has length 26 [2021-06-05 03:19:08,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:08,182 INFO L482 AbstractCegarLoop]: Abstraction has 1277 states and 3382 transitions. [2021-06-05 03:19:08,182 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 03:19:08,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 3382 transitions. [2021-06-05 03:19:08,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:08,183 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:08,183 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:08,183 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-06-05 03:19:08,183 INFO L430 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:08,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:08,184 INFO L82 PathProgramCache]: Analyzing trace with hash 946663070, now seen corresponding path program 291 times [2021-06-05 03:19:08,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:08,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740658271] [2021-06-05 03:19:08,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:08,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:08,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740658271] [2021-06-05 03:19:08,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740658271] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:08,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:08,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:19:08,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180069328] [2021-06-05 03:19:08,231 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:19:08,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:08,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:19:08,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:08,231 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 03:19:08,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:08,351 INFO L93 Difference]: Finished difference Result 1480 states and 3886 transitions. [2021-06-05 03:19:08,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:19:08,351 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 03:19:08,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:08,353 INFO L225 Difference]: With dead ends: 1480 [2021-06-05 03:19:08,353 INFO L226 Difference]: Without dead ends: 1330 [2021-06-05 03:19:08,353 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:08,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-06-05 03:19:08,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1268. [2021-06-05 03:19:08,368 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 03:19:08,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 3355 transitions. [2021-06-05 03:19:08,370 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 3355 transitions. Word has length 26 [2021-06-05 03:19:08,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:08,370 INFO L482 AbstractCegarLoop]: Abstraction has 1268 states and 3355 transitions. [2021-06-05 03:19:08,370 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 03:19:08,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 3355 transitions. [2021-06-05 03:19:08,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:08,371 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:08,371 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 03:19:08,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-06-05 03:19:08,371 INFO L430 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:08,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:08,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1222936682, now seen corresponding path program 292 times [2021-06-05 03:19:08,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:08,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568419938] [2021-06-05 03:19:08,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:08,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:08,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568419938] [2021-06-05 03:19:08,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568419938] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:08,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:08,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:19:08,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486439887] [2021-06-05 03:19:08,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:19:08,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:08,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:19:08,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:08,418 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 03:19:08,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:08,540 INFO L93 Difference]: Finished difference Result 1405 states and 3686 transitions. [2021-06-05 03:19:08,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:19:08,540 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 03:19:08,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:08,542 INFO L225 Difference]: With dead ends: 1405 [2021-06-05 03:19:08,542 INFO L226 Difference]: Without dead ends: 1180 [2021-06-05 03:19:08,542 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:08,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2021-06-05 03:19:08,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1124. [2021-06-05 03:19:08,551 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 03:19:08,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 2972 transitions. [2021-06-05 03:19:08,553 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 2972 transitions. Word has length 26 [2021-06-05 03:19:08,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:08,553 INFO L482 AbstractCegarLoop]: Abstraction has 1124 states and 2972 transitions. [2021-06-05 03:19:08,553 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 03:19:08,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 2972 transitions. [2021-06-05 03:19:08,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:08,554 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:08,554 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:08,554 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-06-05 03:19:08,554 INFO L430 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:08,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:08,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1525154592, now seen corresponding path program 293 times [2021-06-05 03:19:08,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:08,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333493572] [2021-06-05 03:19:08,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:08,601 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 03:19:08,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:08,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333493572] [2021-06-05 03:19:08,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333493572] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:08,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:08,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:19:08,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399125507] [2021-06-05 03:19:08,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:19:08,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:08,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:19:08,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:08,602 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 03:19:08,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:08,728 INFO L93 Difference]: Finished difference Result 1284 states and 3343 transitions. [2021-06-05 03:19:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:19:08,728 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 03:19:08,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:08,729 INFO L225 Difference]: With dead ends: 1284 [2021-06-05 03:19:08,729 INFO L226 Difference]: Without dead ends: 1064 [2021-06-05 03:19:08,729 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:08,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2021-06-05 03:19:08,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1040. [2021-06-05 03:19:08,738 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 03:19:08,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 2714 transitions. [2021-06-05 03:19:08,739 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 2714 transitions. Word has length 26 [2021-06-05 03:19:08,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:08,739 INFO L482 AbstractCegarLoop]: Abstraction has 1040 states and 2714 transitions. [2021-06-05 03:19:08,739 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 03:19:08,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 2714 transitions. [2021-06-05 03:19:08,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:08,740 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:08,740 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:08,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-06-05 03:19:08,740 INFO L430 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:08,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:08,740 INFO L82 PathProgramCache]: Analyzing trace with hash 665569598, now seen corresponding path program 294 times [2021-06-05 03:19:08,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:08,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717746738] [2021-06-05 03:19:08,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:08,795 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 03:19:08,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:08,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717746738] [2021-06-05 03:19:08,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717746738] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:08,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:08,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:08,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345246501] [2021-06-05 03:19:08,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:08,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:08,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:08,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:08,796 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 03:19:08,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:08,952 INFO L93 Difference]: Finished difference Result 1182 states and 3054 transitions. [2021-06-05 03:19:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:08,952 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:08,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:08,953 INFO L225 Difference]: With dead ends: 1182 [2021-06-05 03:19:08,953 INFO L226 Difference]: Without dead ends: 982 [2021-06-05 03:19:08,954 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:08,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-06-05 03:19:08,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 950. [2021-06-05 03:19:08,961 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 03:19:08,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 2488 transitions. [2021-06-05 03:19:08,962 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 2488 transitions. Word has length 26 [2021-06-05 03:19:08,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:08,962 INFO L482 AbstractCegarLoop]: Abstraction has 950 states and 2488 transitions. [2021-06-05 03:19:08,962 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 03:19:08,962 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 2488 transitions. [2021-06-05 03:19:08,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:08,963 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:08,963 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 03:19:08,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-06-05 03:19:08,963 INFO L430 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:08,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:08,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1307346048, now seen corresponding path program 295 times [2021-06-05 03:19:08,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:08,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433388878] [2021-06-05 03:19:08,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:09,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:09,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:09,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433388878] [2021-06-05 03:19:09,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433388878] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:09,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:09,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:09,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483532340] [2021-06-05 03:19:09,024 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:09,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:09,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:09,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:09,024 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 03:19:09,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:09,182 INFO L93 Difference]: Finished difference Result 1068 states and 2776 transitions. [2021-06-05 03:19:09,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:09,182 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:09,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:09,183 INFO L225 Difference]: With dead ends: 1068 [2021-06-05 03:19:09,183 INFO L226 Difference]: Without dead ends: 975 [2021-06-05 03:19:09,183 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 03:19:09,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2021-06-05 03:19:09,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 956. [2021-06-05 03:19:09,191 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 03:19:09,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 2498 transitions. [2021-06-05 03:19:09,192 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 2498 transitions. Word has length 26 [2021-06-05 03:19:09,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:09,192 INFO L482 AbstractCegarLoop]: Abstraction has 956 states and 2498 transitions. [2021-06-05 03:19:09,192 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:09,192 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 2498 transitions. [2021-06-05 03:19:09,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:09,193 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:09,193 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:09,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-06-05 03:19:09,193 INFO L430 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:09,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:09,194 INFO L82 PathProgramCache]: Analyzing trace with hash 399094912, now seen corresponding path program 296 times [2021-06-05 03:19:09,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:09,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390902674] [2021-06-05 03:19:09,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:09,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:09,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390902674] [2021-06-05 03:19:09,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390902674] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:09,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:09,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:09,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673553652] [2021-06-05 03:19:09,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:09,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:09,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:09,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:09,250 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 03:19:09,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:09,409 INFO L93 Difference]: Finished difference Result 1078 states and 2806 transitions. [2021-06-05 03:19:09,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:09,409 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:09,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:09,410 INFO L225 Difference]: With dead ends: 1078 [2021-06-05 03:19:09,410 INFO L226 Difference]: Without dead ends: 1003 [2021-06-05 03:19:09,411 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:09,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-06-05 03:19:09,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 959. [2021-06-05 03:19:09,418 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 03:19:09,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 2509 transitions. [2021-06-05 03:19:09,419 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 2509 transitions. Word has length 26 [2021-06-05 03:19:09,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:09,420 INFO L482 AbstractCegarLoop]: Abstraction has 959 states and 2509 transitions. [2021-06-05 03:19:09,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:09,420 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 2509 transitions. [2021-06-05 03:19:09,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:09,421 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:09,421 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:09,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-06-05 03:19:09,421 INFO L430 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:09,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:09,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1268539520, now seen corresponding path program 297 times [2021-06-05 03:19:09,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:09,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39588956] [2021-06-05 03:19:09,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:09,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:09,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:09,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39588956] [2021-06-05 03:19:09,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39588956] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:09,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:09,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:09,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382628638] [2021-06-05 03:19:09,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:09,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:09,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:09,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:09,482 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 03:19:09,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:09,643 INFO L93 Difference]: Finished difference Result 1113 states and 2881 transitions. [2021-06-05 03:19:09,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:09,643 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 03:19:09,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:09,644 INFO L225 Difference]: With dead ends: 1113 [2021-06-05 03:19:09,644 INFO L226 Difference]: Without dead ends: 981 [2021-06-05 03:19:09,645 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 03:19:09,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2021-06-05 03:19:09,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 941. [2021-06-05 03:19:09,652 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 03:19:09,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 2463 transitions. [2021-06-05 03:19:09,653 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 2463 transitions. Word has length 26 [2021-06-05 03:19:09,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:09,654 INFO L482 AbstractCegarLoop]: Abstraction has 941 states and 2463 transitions. [2021-06-05 03:19:09,654 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:09,654 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 2463 transitions. [2021-06-05 03:19:09,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:09,654 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:09,654 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:09,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-06-05 03:19:09,655 INFO L430 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:09,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:09,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1319670878, now seen corresponding path program 298 times [2021-06-05 03:19:09,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:09,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89324363] [2021-06-05 03:19:09,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:09,714 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 03:19:09,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:09,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89324363] [2021-06-05 03:19:09,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89324363] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:09,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:09,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:09,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112472364] [2021-06-05 03:19:09,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:09,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:09,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:09,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:09,715 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 03:19:09,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:09,875 INFO L93 Difference]: Finished difference Result 1045 states and 2715 transitions. [2021-06-05 03:19:09,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:09,876 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:09,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:09,877 INFO L225 Difference]: With dead ends: 1045 [2021-06-05 03:19:09,877 INFO L226 Difference]: Without dead ends: 955 [2021-06-05 03:19:09,877 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 03:19:09,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2021-06-05 03:19:09,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 926. [2021-06-05 03:19:09,885 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 03:19:09,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 2430 transitions. [2021-06-05 03:19:09,886 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 2430 transitions. Word has length 26 [2021-06-05 03:19:09,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:09,886 INFO L482 AbstractCegarLoop]: Abstraction has 926 states and 2430 transitions. [2021-06-05 03:19:09,886 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:09,886 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 2430 transitions. [2021-06-05 03:19:09,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:09,887 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:09,887 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:09,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-06-05 03:19:09,887 INFO L430 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:09,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:09,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1696776638, now seen corresponding path program 299 times [2021-06-05 03:19:09,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:09,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771596078] [2021-06-05 03:19:09,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:09,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:09,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:09,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771596078] [2021-06-05 03:19:09,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771596078] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:09,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:09,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:09,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816443761] [2021-06-05 03:19:09,942 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:09,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:09,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:09,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:09,943 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 03:19:10,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:10,103 INFO L93 Difference]: Finished difference Result 1077 states and 2798 transitions. [2021-06-05 03:19:10,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:10,104 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:10,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:10,105 INFO L225 Difference]: With dead ends: 1077 [2021-06-05 03:19:10,105 INFO L226 Difference]: Without dead ends: 984 [2021-06-05 03:19:10,105 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:10,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2021-06-05 03:19:10,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 926. [2021-06-05 03:19:10,112 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 03:19:10,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 2422 transitions. [2021-06-05 03:19:10,114 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 2422 transitions. Word has length 26 [2021-06-05 03:19:10,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:10,114 INFO L482 AbstractCegarLoop]: Abstraction has 926 states and 2422 transitions. [2021-06-05 03:19:10,114 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 03:19:10,114 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 2422 transitions. [2021-06-05 03:19:10,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:10,115 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:10,115 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 03:19:10,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-06-05 03:19:10,115 INFO L430 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:10,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:10,115 INFO L82 PathProgramCache]: Analyzing trace with hash 810733658, now seen corresponding path program 300 times [2021-06-05 03:19:10,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:10,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836809983] [2021-06-05 03:19:10,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:10,171 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 03:19:10,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:10,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836809983] [2021-06-05 03:19:10,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836809983] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:10,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:10,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:10,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565920132] [2021-06-05 03:19:10,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:10,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:10,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:10,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:10,172 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 03:19:10,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:10,335 INFO L93 Difference]: Finished difference Result 1095 states and 2837 transitions. [2021-06-05 03:19:10,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:10,335 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:10,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:10,336 INFO L225 Difference]: With dead ends: 1095 [2021-06-05 03:19:10,336 INFO L226 Difference]: Without dead ends: 1012 [2021-06-05 03:19:10,336 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:10,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-06-05 03:19:10,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 914. [2021-06-05 03:19:10,344 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 03:19:10,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 2395 transitions. [2021-06-05 03:19:10,345 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 2395 transitions. Word has length 26 [2021-06-05 03:19:10,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:10,345 INFO L482 AbstractCegarLoop]: Abstraction has 914 states and 2395 transitions. [2021-06-05 03:19:10,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:10,345 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 2395 transitions. [2021-06-05 03:19:10,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:10,346 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:10,346 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:10,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-06-05 03:19:10,346 INFO L430 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:10,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:10,346 INFO L82 PathProgramCache]: Analyzing trace with hash -758194884, now seen corresponding path program 301 times [2021-06-05 03:19:10,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:10,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703792841] [2021-06-05 03:19:10,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:10,404 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 03:19:10,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:10,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703792841] [2021-06-05 03:19:10,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703792841] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:10,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:10,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:10,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350642434] [2021-06-05 03:19:10,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:10,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:10,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:10,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:10,405 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 03:19:10,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:10,563 INFO L93 Difference]: Finished difference Result 1015 states and 2644 transitions. [2021-06-05 03:19:10,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:10,564 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 03:19:10,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:10,565 INFO L225 Difference]: With dead ends: 1015 [2021-06-05 03:19:10,565 INFO L226 Difference]: Without dead ends: 928 [2021-06-05 03:19:10,565 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:10,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2021-06-05 03:19:10,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 876. [2021-06-05 03:19:10,572 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 03:19:10,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2300 transitions. [2021-06-05 03:19:10,573 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2300 transitions. Word has length 26 [2021-06-05 03:19:10,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:10,573 INFO L482 AbstractCegarLoop]: Abstraction has 876 states and 2300 transitions. [2021-06-05 03:19:10,573 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:10,573 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2300 transitions. [2021-06-05 03:19:10,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:10,574 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:10,574 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:10,574 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-06-05 03:19:10,574 INFO L430 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:10,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:10,574 INFO L82 PathProgramCache]: Analyzing trace with hash -504509764, now seen corresponding path program 302 times [2021-06-05 03:19:10,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:10,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449107913] [2021-06-05 03:19:10,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:10,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:10,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449107913] [2021-06-05 03:19:10,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449107913] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:10,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:10,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:10,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051869025] [2021-06-05 03:19:10,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:10,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:10,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:10,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:10,643 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 03:19:10,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:10,807 INFO L93 Difference]: Finished difference Result 1024 states and 2650 transitions. [2021-06-05 03:19:10,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:10,808 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:10,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:10,809 INFO L225 Difference]: With dead ends: 1024 [2021-06-05 03:19:10,809 INFO L226 Difference]: Without dead ends: 949 [2021-06-05 03:19:10,809 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:10,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2021-06-05 03:19:10,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 881. [2021-06-05 03:19:10,816 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 03:19:10,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 2316 transitions. [2021-06-05 03:19:10,817 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 2316 transitions. Word has length 26 [2021-06-05 03:19:10,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:10,817 INFO L482 AbstractCegarLoop]: Abstraction has 881 states and 2316 transitions. [2021-06-05 03:19:10,817 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 03:19:10,817 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 2316 transitions. [2021-06-05 03:19:10,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:10,818 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:10,818 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 03:19:10,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-06-05 03:19:10,818 INFO L430 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:10,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:10,818 INFO L82 PathProgramCache]: Analyzing trace with hash 364934844, now seen corresponding path program 303 times [2021-06-05 03:19:10,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:10,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013785100] [2021-06-05 03:19:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:10,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:10,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:10,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013785100] [2021-06-05 03:19:10,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013785100] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:10,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:10,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:10,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431974331] [2021-06-05 03:19:10,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:10,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:10,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:10,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:10,875 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 03:19:11,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:11,036 INFO L93 Difference]: Finished difference Result 1013 states and 2642 transitions. [2021-06-05 03:19:11,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:11,036 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:11,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:11,037 INFO L225 Difference]: With dead ends: 1013 [2021-06-05 03:19:11,037 INFO L226 Difference]: Without dead ends: 912 [2021-06-05 03:19:11,037 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:11,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-06-05 03:19:11,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 880. [2021-06-05 03:19:11,045 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 03:19:11,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 2312 transitions. [2021-06-05 03:19:11,046 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 2312 transitions. Word has length 26 [2021-06-05 03:19:11,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:11,046 INFO L482 AbstractCegarLoop]: Abstraction has 880 states and 2312 transitions. [2021-06-05 03:19:11,046 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 03:19:11,046 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 2312 transitions. [2021-06-05 03:19:11,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:11,047 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:11,047 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 03:19:11,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-06-05 03:19:11,047 INFO L430 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:11,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:11,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1103776386, now seen corresponding path program 304 times [2021-06-05 03:19:11,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:11,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595342001] [2021-06-05 03:19:11,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:11,103 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 03:19:11,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:11,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595342001] [2021-06-05 03:19:11,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595342001] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:11,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:11,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:11,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706744258] [2021-06-05 03:19:11,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:11,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:11,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:11,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:11,104 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 03:19:11,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:11,260 INFO L93 Difference]: Finished difference Result 1005 states and 2609 transitions. [2021-06-05 03:19:11,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:11,261 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 03:19:11,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:11,262 INFO L225 Difference]: With dead ends: 1005 [2021-06-05 03:19:11,262 INFO L226 Difference]: Without dead ends: 924 [2021-06-05 03:19:11,262 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:11,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-06-05 03:19:11,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 882. [2021-06-05 03:19:11,269 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 03:19:11,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2320 transitions. [2021-06-05 03:19:11,270 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2320 transitions. Word has length 26 [2021-06-05 03:19:11,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:11,270 INFO L482 AbstractCegarLoop]: Abstraction has 882 states and 2320 transitions. [2021-06-05 03:19:11,270 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 03:19:11,270 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2320 transitions. [2021-06-05 03:19:11,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:11,271 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:11,271 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 03:19:11,271 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-06-05 03:19:11,271 INFO L430 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:11,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:11,271 INFO L82 PathProgramCache]: Analyzing trace with hash -711317730, now seen corresponding path program 305 times [2021-06-05 03:19:11,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:11,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924739894] [2021-06-05 03:19:11,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:11,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:11,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:11,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924739894] [2021-06-05 03:19:11,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924739894] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:11,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:11,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:11,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516666788] [2021-06-05 03:19:11,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:11,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:11,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:11,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:11,329 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 03:19:11,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:11,494 INFO L93 Difference]: Finished difference Result 1011 states and 2638 transitions. [2021-06-05 03:19:11,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:11,494 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:11,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:11,495 INFO L225 Difference]: With dead ends: 1011 [2021-06-05 03:19:11,495 INFO L226 Difference]: Without dead ends: 936 [2021-06-05 03:19:11,495 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:11,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2021-06-05 03:19:11,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 886. [2021-06-05 03:19:11,503 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 03:19:11,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 2334 transitions. [2021-06-05 03:19:11,504 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 2334 transitions. Word has length 26 [2021-06-05 03:19:11,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:11,504 INFO L482 AbstractCegarLoop]: Abstraction has 886 states and 2334 transitions. [2021-06-05 03:19:11,504 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:11,504 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 2334 transitions. [2021-06-05 03:19:11,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:11,505 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:11,505 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 03:19:11,505 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-06-05 03:19:11,505 INFO L430 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:11,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:11,505 INFO L82 PathProgramCache]: Analyzing trace with hash 158126878, now seen corresponding path program 306 times [2021-06-05 03:19:11,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:11,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329767692] [2021-06-05 03:19:11,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:11,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:11,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329767692] [2021-06-05 03:19:11,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329767692] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:11,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:11,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:11,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131907337] [2021-06-05 03:19:11,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:11,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:11,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:11,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:11,562 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 03:19:11,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:11,740 INFO L93 Difference]: Finished difference Result 1026 states and 2678 transitions. [2021-06-05 03:19:11,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:11,740 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 03:19:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:11,741 INFO L225 Difference]: With dead ends: 1026 [2021-06-05 03:19:11,741 INFO L226 Difference]: Without dead ends: 925 [2021-06-05 03:19:11,741 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:11,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2021-06-05 03:19:11,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 883. [2021-06-05 03:19:11,748 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 03:19:11,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 2325 transitions. [2021-06-05 03:19:11,749 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 2325 transitions. Word has length 26 [2021-06-05 03:19:11,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:11,749 INFO L482 AbstractCegarLoop]: Abstraction has 883 states and 2325 transitions. [2021-06-05 03:19:11,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:11,750 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 2325 transitions. [2021-06-05 03:19:11,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:11,750 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:11,750 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:11,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-06-05 03:19:11,750 INFO L430 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:11,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:11,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2078810748, now seen corresponding path program 307 times [2021-06-05 03:19:11,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:11,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409450309] [2021-06-05 03:19:11,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:11,817 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 03:19:11,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:11,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409450309] [2021-06-05 03:19:11,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409450309] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:11,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:11,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:11,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322971945] [2021-06-05 03:19:11,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:11,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:11,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:11,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:11,818 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 03:19:11,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:11,974 INFO L93 Difference]: Finished difference Result 993 states and 2589 transitions. [2021-06-05 03:19:11,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:11,974 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:11,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:11,975 INFO L225 Difference]: With dead ends: 993 [2021-06-05 03:19:11,975 INFO L226 Difference]: Without dead ends: 912 [2021-06-05 03:19:11,975 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 03:19:11,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-06-05 03:19:11,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 884. [2021-06-05 03:19:11,983 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 03:19:11,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 2326 transitions. [2021-06-05 03:19:11,984 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 2326 transitions. Word has length 26 [2021-06-05 03:19:11,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:11,984 INFO L482 AbstractCegarLoop]: Abstraction has 884 states and 2326 transitions. [2021-06-05 03:19:11,984 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:11,984 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 2326 transitions. [2021-06-05 03:19:11,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:11,985 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:11,985 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:11,985 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-06-05 03:19:11,985 INFO L430 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:11,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:11,985 INFO L82 PathProgramCache]: Analyzing trace with hash -96218856, now seen corresponding path program 308 times [2021-06-05 03:19:11,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:11,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613494968] [2021-06-05 03:19:11,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:12,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:12,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613494968] [2021-06-05 03:19:12,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613494968] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:12,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:12,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:12,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183195007] [2021-06-05 03:19:12,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:12,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:12,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:12,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:12,046 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 03:19:12,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:12,207 INFO L93 Difference]: Finished difference Result 999 states and 2604 transitions. [2021-06-05 03:19:12,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:12,208 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:12,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:12,209 INFO L225 Difference]: With dead ends: 999 [2021-06-05 03:19:12,209 INFO L226 Difference]: Without dead ends: 890 [2021-06-05 03:19:12,209 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:12,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-06-05 03:19:12,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 878. [2021-06-05 03:19:12,216 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 03:19:12,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 2313 transitions. [2021-06-05 03:19:12,217 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 2313 transitions. Word has length 26 [2021-06-05 03:19:12,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:12,217 INFO L482 AbstractCegarLoop]: Abstraction has 878 states and 2313 transitions. [2021-06-05 03:19:12,217 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:12,217 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 2313 transitions. [2021-06-05 03:19:12,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:12,218 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:12,218 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:12,218 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-06-05 03:19:12,218 INFO L430 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:12,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:12,218 INFO L82 PathProgramCache]: Analyzing trace with hash 408641760, now seen corresponding path program 309 times [2021-06-05 03:19:12,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:12,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885980096] [2021-06-05 03:19:12,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:12,274 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 03:19:12,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:12,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885980096] [2021-06-05 03:19:12,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885980096] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:12,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:12,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:12,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699892217] [2021-06-05 03:19:12,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:12,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:12,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:12,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:12,275 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 03:19:12,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:12,460 INFO L93 Difference]: Finished difference Result 1017 states and 2638 transitions. [2021-06-05 03:19:12,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:12,460 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:12,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:12,461 INFO L225 Difference]: With dead ends: 1017 [2021-06-05 03:19:12,461 INFO L226 Difference]: Without dead ends: 938 [2021-06-05 03:19:12,461 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:12,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-06-05 03:19:12,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 878. [2021-06-05 03:19:12,469 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 03:19:12,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 2313 transitions. [2021-06-05 03:19:12,471 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 2313 transitions. Word has length 26 [2021-06-05 03:19:12,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:12,471 INFO L482 AbstractCegarLoop]: Abstraction has 878 states and 2313 transitions. [2021-06-05 03:19:12,471 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:12,471 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 2313 transitions. [2021-06-05 03:19:12,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:12,471 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:12,472 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:12,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-06-05 03:19:12,472 INFO L430 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:12,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:12,472 INFO L82 PathProgramCache]: Analyzing trace with hash -983502786, now seen corresponding path program 310 times [2021-06-05 03:19:12,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:12,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481110986] [2021-06-05 03:19:12,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:12,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:12,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481110986] [2021-06-05 03:19:12,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481110986] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:12,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:12,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:12,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583873356] [2021-06-05 03:19:12,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:12,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:12,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:12,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:12,532 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 03:19:12,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:12,687 INFO L93 Difference]: Finished difference Result 986 states and 2573 transitions. [2021-06-05 03:19:12,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:12,688 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:12,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:12,689 INFO L225 Difference]: With dead ends: 986 [2021-06-05 03:19:12,689 INFO L226 Difference]: Without dead ends: 900 [2021-06-05 03:19:12,689 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 03:19:12,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-06-05 03:19:12,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 871. [2021-06-05 03:19:12,696 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 03:19:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 2296 transitions. [2021-06-05 03:19:12,697 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 2296 transitions. Word has length 26 [2021-06-05 03:19:12,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:12,697 INFO L482 AbstractCegarLoop]: Abstraction has 871 states and 2296 transitions. [2021-06-05 03:19:12,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:12,697 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 2296 transitions. [2021-06-05 03:19:12,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:12,698 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:12,698 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:12,698 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-06-05 03:19:12,698 INFO L430 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:12,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:12,698 INFO L82 PathProgramCache]: Analyzing trace with hash -193149290, now seen corresponding path program 311 times [2021-06-05 03:19:12,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:12,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722200455] [2021-06-05 03:19:12,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:12,764 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 03:19:12,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:12,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722200455] [2021-06-05 03:19:12,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722200455] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:12,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:12,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:12,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511248805] [2021-06-05 03:19:12,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:12,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:12,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:12,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:12,765 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 03:19:12,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:12,940 INFO L93 Difference]: Finished difference Result 1044 states and 2714 transitions. [2021-06-05 03:19:12,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:12,941 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 03:19:12,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:12,942 INFO L225 Difference]: With dead ends: 1044 [2021-06-05 03:19:12,942 INFO L226 Difference]: Without dead ends: 907 [2021-06-05 03:19:12,942 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 03:19:12,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-06-05 03:19:12,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 883. [2021-06-05 03:19:12,949 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 03:19:12,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 2316 transitions. [2021-06-05 03:19:12,950 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 2316 transitions. Word has length 26 [2021-06-05 03:19:12,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:12,950 INFO L482 AbstractCegarLoop]: Abstraction has 883 states and 2316 transitions. [2021-06-05 03:19:12,950 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:12,950 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 2316 transitions. [2021-06-05 03:19:12,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:12,951 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:12,951 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:12,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-06-05 03:19:12,951 INFO L430 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:12,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:12,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1101400426, now seen corresponding path program 312 times [2021-06-05 03:19:12,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:12,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394321868] [2021-06-05 03:19:12,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:13,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:13,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:13,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394321868] [2021-06-05 03:19:13,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394321868] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:13,021 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:13,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:13,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607578400] [2021-06-05 03:19:13,021 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:13,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:13,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:13,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:13,021 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 03:19:13,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:13,178 INFO L93 Difference]: Finished difference Result 1036 states and 2690 transitions. [2021-06-05 03:19:13,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:13,179 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 03:19:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:13,180 INFO L225 Difference]: With dead ends: 1036 [2021-06-05 03:19:13,180 INFO L226 Difference]: Without dead ends: 910 [2021-06-05 03:19:13,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2021-06-05 03:19:13,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 896. [2021-06-05 03:19:13,187 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 03:19:13,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2337 transitions. [2021-06-05 03:19:13,188 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2337 transitions. Word has length 26 [2021-06-05 03:19:13,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:13,189 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2337 transitions. [2021-06-05 03:19:13,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:13,189 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2337 transitions. [2021-06-05 03:19:13,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:13,189 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:13,189 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:13,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-06-05 03:19:13,190 INFO L430 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:13,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:13,190 INFO L82 PathProgramCache]: Analyzing trace with hash -180824460, now seen corresponding path program 313 times [2021-06-05 03:19:13,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:13,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410082117] [2021-06-05 03:19:13,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:13,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:13,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410082117] [2021-06-05 03:19:13,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410082117] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:13,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:13,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:13,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764618297] [2021-06-05 03:19:13,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:13,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:13,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:13,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:13,246 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 03:19:13,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:13,403 INFO L93 Difference]: Finished difference Result 1048 states and 2702 transitions. [2021-06-05 03:19:13,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:13,404 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:13,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:13,405 INFO L225 Difference]: With dead ends: 1048 [2021-06-05 03:19:13,405 INFO L226 Difference]: Without dead ends: 914 [2021-06-05 03:19:13,405 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:13,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-06-05 03:19:13,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 884. [2021-06-05 03:19:13,413 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 03:19:13,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 2305 transitions. [2021-06-05 03:19:13,414 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 2305 transitions. Word has length 26 [2021-06-05 03:19:13,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:13,414 INFO L482 AbstractCegarLoop]: Abstraction has 884 states and 2305 transitions. [2021-06-05 03:19:13,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:13,414 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 2305 transitions. [2021-06-05 03:19:13,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:13,415 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:13,415 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:13,415 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-06-05 03:19:13,415 INFO L430 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:13,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:13,415 INFO L82 PathProgramCache]: Analyzing trace with hash -710790132, now seen corresponding path program 314 times [2021-06-05 03:19:13,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:13,415 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260919514] [2021-06-05 03:19:13,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:13,484 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 03:19:13,485 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:13,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260919514] [2021-06-05 03:19:13,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260919514] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:13,485 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:13,485 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:13,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343095230] [2021-06-05 03:19:13,485 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:13,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:13,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:13,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:13,485 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 03:19:13,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:13,642 INFO L93 Difference]: Finished difference Result 1011 states and 2623 transitions. [2021-06-05 03:19:13,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:13,642 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:13,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:13,643 INFO L225 Difference]: With dead ends: 1011 [2021-06-05 03:19:13,643 INFO L226 Difference]: Without dead ends: 865 [2021-06-05 03:19:13,644 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:13,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-06-05 03:19:13,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 845. [2021-06-05 03:19:13,651 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 03:19:13,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2216 transitions. [2021-06-05 03:19:13,652 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2216 transitions. Word has length 26 [2021-06-05 03:19:13,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:13,652 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2216 transitions. [2021-06-05 03:19:13,652 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 03:19:13,652 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2216 transitions. [2021-06-05 03:19:13,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:13,653 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:13,653 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 03:19:13,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-06-05 03:19:13,653 INFO L430 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:13,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:13,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1898437632, now seen corresponding path program 315 times [2021-06-05 03:19:13,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:13,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116283091] [2021-06-05 03:19:13,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:13,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:13,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:13,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116283091] [2021-06-05 03:19:13,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116283091] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:13,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:13,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:19:13,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082017356] [2021-06-05 03:19:13,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:19:13,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:13,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:19:13,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:13,701 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 03:19:13,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:13,823 INFO L93 Difference]: Finished difference Result 978 states and 2521 transitions. [2021-06-05 03:19:13,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:19:13,823 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 03:19:13,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:13,824 INFO L225 Difference]: With dead ends: 978 [2021-06-05 03:19:13,824 INFO L226 Difference]: Without dead ends: 883 [2021-06-05 03:19:13,824 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:13,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-06-05 03:19:13,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 845. [2021-06-05 03:19:13,831 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 03:19:13,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2212 transitions. [2021-06-05 03:19:13,832 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2212 transitions. Word has length 26 [2021-06-05 03:19:13,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:13,832 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2212 transitions. [2021-06-05 03:19:13,832 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 03:19:13,832 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2212 transitions. [2021-06-05 03:19:13,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:13,833 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:13,833 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 03:19:13,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-06-05 03:19:13,833 INFO L430 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:13,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:13,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1247061632, now seen corresponding path program 316 times [2021-06-05 03:19:13,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:13,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501182169] [2021-06-05 03:19:13,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:13,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:13,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501182169] [2021-06-05 03:19:13,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501182169] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:13,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:13,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:13,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025569456] [2021-06-05 03:19:13,890 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:13,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:13,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:13,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:13,891 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 03:19:14,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:14,051 INFO L93 Difference]: Finished difference Result 986 states and 2546 transitions. [2021-06-05 03:19:14,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:14,051 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:14,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:14,052 INFO L225 Difference]: With dead ends: 986 [2021-06-05 03:19:14,052 INFO L226 Difference]: Without dead ends: 911 [2021-06-05 03:19:14,052 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:14,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2021-06-05 03:19:14,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 857. [2021-06-05 03:19:14,059 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 03:19:14,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 2235 transitions. [2021-06-05 03:19:14,060 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 2235 transitions. Word has length 26 [2021-06-05 03:19:14,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:14,060 INFO L482 AbstractCegarLoop]: Abstraction has 857 states and 2235 transitions. [2021-06-05 03:19:14,060 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 03:19:14,060 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 2235 transitions. [2021-06-05 03:19:14,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:14,061 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:14,061 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 03:19:14,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-06-05 03:19:14,061 INFO L430 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:14,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:14,062 INFO L82 PathProgramCache]: Analyzing trace with hash 2116506240, now seen corresponding path program 317 times [2021-06-05 03:19:14,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:14,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499583309] [2021-06-05 03:19:14,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:14,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:14,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499583309] [2021-06-05 03:19:14,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499583309] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:14,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:14,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:14,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296267532] [2021-06-05 03:19:14,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:14,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:14,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:14,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:14,119 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 03:19:14,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:14,306 INFO L93 Difference]: Finished difference Result 988 states and 2567 transitions. [2021-06-05 03:19:14,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:14,306 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:14,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:14,307 INFO L225 Difference]: With dead ends: 988 [2021-06-05 03:19:14,307 INFO L226 Difference]: Without dead ends: 883 [2021-06-05 03:19:14,307 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:14,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-06-05 03:19:14,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 852. [2021-06-05 03:19:14,314 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 03:19:14,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 2215 transitions. [2021-06-05 03:19:14,315 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 2215 transitions. Word has length 26 [2021-06-05 03:19:14,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:14,315 INFO L482 AbstractCegarLoop]: Abstraction has 852 states and 2215 transitions. [2021-06-05 03:19:14,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 2215 transitions. [2021-06-05 03:19:14,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:14,316 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:14,316 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 03:19:14,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-06-05 03:19:14,316 INFO L430 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:14,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:14,316 INFO L82 PathProgramCache]: Analyzing trace with hash -257777186, now seen corresponding path program 318 times [2021-06-05 03:19:14,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:14,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864609981] [2021-06-05 03:19:14,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:14,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:14,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864609981] [2021-06-05 03:19:14,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864609981] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:14,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:14,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:14,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108317232] [2021-06-05 03:19:14,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:14,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:14,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:14,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:14,398 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 03:19:14,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:14,584 INFO L93 Difference]: Finished difference Result 953 states and 2465 transitions. [2021-06-05 03:19:14,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:14,585 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:14,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:14,586 INFO L225 Difference]: With dead ends: 953 [2021-06-05 03:19:14,586 INFO L226 Difference]: Without dead ends: 872 [2021-06-05 03:19:14,586 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:14,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-06-05 03:19:14,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 856. [2021-06-05 03:19:14,594 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 03:19:14,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 2224 transitions. [2021-06-05 03:19:14,595 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 2224 transitions. Word has length 26 [2021-06-05 03:19:14,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:14,595 INFO L482 AbstractCegarLoop]: Abstraction has 856 states and 2224 transitions. [2021-06-05 03:19:14,595 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:14,595 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 2224 transitions. [2021-06-05 03:19:14,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:14,596 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:14,596 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 03:19:14,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-06-05 03:19:14,596 INFO L430 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:14,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:14,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1862160506, now seen corresponding path program 319 times [2021-06-05 03:19:14,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:14,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445755254] [2021-06-05 03:19:14,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:14,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:14,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:14,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445755254] [2021-06-05 03:19:14,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445755254] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:14,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:14,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:14,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311178425] [2021-06-05 03:19:14,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:14,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:14,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:14,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:14,689 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 03:19:14,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:14,849 INFO L93 Difference]: Finished difference Result 967 states and 2502 transitions. [2021-06-05 03:19:14,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:14,850 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:14,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:14,851 INFO L225 Difference]: With dead ends: 967 [2021-06-05 03:19:14,851 INFO L226 Difference]: Without dead ends: 864 [2021-06-05 03:19:14,851 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 03:19:14,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-06-05 03:19:14,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 853. [2021-06-05 03:19:14,857 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 03:19:14,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2218 transitions. [2021-06-05 03:19:14,858 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2218 transitions. Word has length 26 [2021-06-05 03:19:14,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:14,859 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2218 transitions. [2021-06-05 03:19:14,859 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 03:19:14,859 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2218 transitions. [2021-06-05 03:19:14,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:14,859 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:14,859 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:14,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-06-05 03:19:14,860 INFO L430 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:14,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:14,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1927946174, now seen corresponding path program 320 times [2021-06-05 03:19:14,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:14,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040417968] [2021-06-05 03:19:14,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:14,916 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 03:19:14,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:14,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040417968] [2021-06-05 03:19:14,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040417968] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:14,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:14,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:14,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723834534] [2021-06-05 03:19:14,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:14,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:14,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:14,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:14,917 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 03:19:15,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:15,084 INFO L93 Difference]: Finished difference Result 988 states and 2530 transitions. [2021-06-05 03:19:15,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:15,084 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:15,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:15,086 INFO L225 Difference]: With dead ends: 988 [2021-06-05 03:19:15,086 INFO L226 Difference]: Without dead ends: 905 [2021-06-05 03:19:15,086 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:15,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2021-06-05 03:19:15,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 849. [2021-06-05 03:19:15,093 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 03:19:15,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2206 transitions. [2021-06-05 03:19:15,094 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2206 transitions. Word has length 26 [2021-06-05 03:19:15,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:15,094 INFO L482 AbstractCegarLoop]: Abstraction has 849 states and 2206 transitions. [2021-06-05 03:19:15,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:15,094 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2206 transitions. [2021-06-05 03:19:15,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:15,095 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:15,095 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:15,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-06-05 03:19:15,095 INFO L430 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:15,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:15,095 INFO L82 PathProgramCache]: Analyzing trace with hash 974876576, now seen corresponding path program 321 times [2021-06-05 03:19:15,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:15,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532215345] [2021-06-05 03:19:15,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:15,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:15,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:15,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532215345] [2021-06-05 03:19:15,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532215345] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:15,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:15,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:15,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846463292] [2021-06-05 03:19:15,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:15,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:15,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:15,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:15,152 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 03:19:15,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:15,312 INFO L93 Difference]: Finished difference Result 951 states and 2457 transitions. [2021-06-05 03:19:15,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:15,313 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:15,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:15,314 INFO L225 Difference]: With dead ends: 951 [2021-06-05 03:19:15,314 INFO L226 Difference]: Without dead ends: 868 [2021-06-05 03:19:15,314 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:15,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-06-05 03:19:15,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 848. [2021-06-05 03:19:15,321 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 03:19:15,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 2201 transitions. [2021-06-05 03:19:15,322 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 2201 transitions. Word has length 26 [2021-06-05 03:19:15,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:15,322 INFO L482 AbstractCegarLoop]: Abstraction has 848 states and 2201 transitions. [2021-06-05 03:19:15,322 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 2201 transitions. [2021-06-05 03:19:15,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:15,323 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:15,323 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:15,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-06-05 03:19:15,323 INFO L430 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:15,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:15,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1587711036, now seen corresponding path program 322 times [2021-06-05 03:19:15,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:15,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972996460] [2021-06-05 03:19:15,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:15,380 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 03:19:15,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:15,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972996460] [2021-06-05 03:19:15,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972996460] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:15,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:15,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:15,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610609757] [2021-06-05 03:19:15,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:15,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:15,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:15,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:15,381 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 03:19:15,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:15,539 INFO L93 Difference]: Finished difference Result 963 states and 2484 transitions. [2021-06-05 03:19:15,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:15,539 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:15,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:15,540 INFO L225 Difference]: With dead ends: 963 [2021-06-05 03:19:15,540 INFO L226 Difference]: Without dead ends: 853 [2021-06-05 03:19:15,540 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:15,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-06-05 03:19:15,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 831. [2021-06-05 03:19:15,547 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 03:19:15,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2161 transitions. [2021-06-05 03:19:15,548 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2161 transitions. Word has length 26 [2021-06-05 03:19:15,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:15,548 INFO L482 AbstractCegarLoop]: Abstraction has 831 states and 2161 transitions. [2021-06-05 03:19:15,548 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:15,548 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2161 transitions. [2021-06-05 03:19:15,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:15,549 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:15,549 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:15,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-06-05 03:19:15,549 INFO L430 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:15,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:15,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1318555276, now seen corresponding path program 323 times [2021-06-05 03:19:15,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:15,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338455742] [2021-06-05 03:19:15,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:15,609 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 03:19:15,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:15,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338455742] [2021-06-05 03:19:15,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338455742] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:15,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:15,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:15,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686258081] [2021-06-05 03:19:15,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:15,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:15,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:15,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:15,610 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 03:19:15,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:15,761 INFO L93 Difference]: Finished difference Result 964 states and 2472 transitions. [2021-06-05 03:19:15,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:15,761 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:15,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:15,762 INFO L225 Difference]: With dead ends: 964 [2021-06-05 03:19:15,762 INFO L226 Difference]: Without dead ends: 883 [2021-06-05 03:19:15,762 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:15,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-06-05 03:19:15,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 827. [2021-06-05 03:19:15,769 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 03:19:15,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 2152 transitions. [2021-06-05 03:19:15,770 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 2152 transitions. Word has length 26 [2021-06-05 03:19:15,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:15,770 INFO L482 AbstractCegarLoop]: Abstraction has 827 states and 2152 transitions. [2021-06-05 03:19:15,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:15,770 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 2152 transitions. [2021-06-05 03:19:15,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:15,771 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:15,771 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 03:19:15,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-06-05 03:19:15,771 INFO L430 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:15,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:15,771 INFO L82 PathProgramCache]: Analyzing trace with hash 801382416, now seen corresponding path program 324 times [2021-06-05 03:19:15,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:15,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602376198] [2021-06-05 03:19:15,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:15,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:15,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:15,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602376198] [2021-06-05 03:19:15,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602376198] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:15,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:15,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:15,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416570513] [2021-06-05 03:19:15,828 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:15,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:15,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:15,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:15,828 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 03:19:15,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:15,981 INFO L93 Difference]: Finished difference Result 932 states and 2411 transitions. [2021-06-05 03:19:15,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:15,981 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:15,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:15,982 INFO L225 Difference]: With dead ends: 932 [2021-06-05 03:19:15,982 INFO L226 Difference]: Without dead ends: 823 [2021-06-05 03:19:15,983 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:15,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-06-05 03:19:15,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 803. [2021-06-05 03:19:15,990 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 03:19:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 2097 transitions. [2021-06-05 03:19:15,990 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 2097 transitions. Word has length 26 [2021-06-05 03:19:15,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:15,991 INFO L482 AbstractCegarLoop]: Abstraction has 803 states and 2097 transitions. [2021-06-05 03:19:15,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:15,991 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 2097 transitions. [2021-06-05 03:19:15,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:15,991 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:15,991 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 03:19:15,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-06-05 03:19:15,992 INFO L430 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:15,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:15,992 INFO L82 PathProgramCache]: Analyzing trace with hash -934523986, now seen corresponding path program 325 times [2021-06-05 03:19:15,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:15,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653847781] [2021-06-05 03:19:15,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:16,061 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 03:19:16,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:16,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653847781] [2021-06-05 03:19:16,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653847781] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:16,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:16,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:16,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162918195] [2021-06-05 03:19:16,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:16,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:16,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:16,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:16,062 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 03:19:16,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:16,215 INFO L93 Difference]: Finished difference Result 925 states and 2372 transitions. [2021-06-05 03:19:16,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:16,215 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:16,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:16,216 INFO L225 Difference]: With dead ends: 925 [2021-06-05 03:19:16,216 INFO L226 Difference]: Without dead ends: 828 [2021-06-05 03:19:16,216 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 03:19:16,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-06-05 03:19:16,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 788. [2021-06-05 03:19:16,223 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 03:19:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 2053 transitions. [2021-06-05 03:19:16,224 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 2053 transitions. Word has length 26 [2021-06-05 03:19:16,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:16,224 INFO L482 AbstractCegarLoop]: Abstraction has 788 states and 2053 transitions. [2021-06-05 03:19:16,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 2053 transitions. [2021-06-05 03:19:16,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:16,225 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:16,225 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:16,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-06-05 03:19:16,225 INFO L430 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:16,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:16,225 INFO L82 PathProgramCache]: Analyzing trace with hash -625259506, now seen corresponding path program 326 times [2021-06-05 03:19:16,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:16,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635116902] [2021-06-05 03:19:16,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:16,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:16,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635116902] [2021-06-05 03:19:16,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635116902] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:16,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:16,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:19:16,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774698077] [2021-06-05 03:19:16,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:19:16,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:16,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:19:16,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:16,272 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 03:19:16,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:16,393 INFO L93 Difference]: Finished difference Result 919 states and 2353 transitions. [2021-06-05 03:19:16,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:19:16,393 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 03:19:16,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:16,394 INFO L225 Difference]: With dead ends: 919 [2021-06-05 03:19:16,394 INFO L226 Difference]: Without dead ends: 826 [2021-06-05 03:19:16,394 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:16,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-06-05 03:19:16,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 788. [2021-06-05 03:19:16,400 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 03:19:16,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 2049 transitions. [2021-06-05 03:19:16,401 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 2049 transitions. Word has length 26 [2021-06-05 03:19:16,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:16,401 INFO L482 AbstractCegarLoop]: Abstraction has 788 states and 2049 transitions. [2021-06-05 03:19:16,401 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 03:19:16,402 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 2049 transitions. [2021-06-05 03:19:16,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:16,402 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:16,402 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:16,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-06-05 03:19:16,402 INFO L430 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:16,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:16,403 INFO L82 PathProgramCache]: Analyzing trace with hash 244185102, now seen corresponding path program 327 times [2021-06-05 03:19:16,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:16,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994285154] [2021-06-05 03:19:16,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:16,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:16,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:16,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994285154] [2021-06-05 03:19:16,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994285154] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:16,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:16,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:16,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618769997] [2021-06-05 03:19:16,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:16,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:16,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:16,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:16,459 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 03:19:16,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:16,610 INFO L93 Difference]: Finished difference Result 935 states and 2392 transitions. [2021-06-05 03:19:16,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:16,610 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 03:19:16,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:16,611 INFO L225 Difference]: With dead ends: 935 [2021-06-05 03:19:16,611 INFO L226 Difference]: Without dead ends: 666 [2021-06-05 03:19:16,611 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:16,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-06-05 03:19:16,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 594. [2021-06-05 03:19:16,616 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 03:19:16,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1515 transitions. [2021-06-05 03:19:16,617 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1515 transitions. Word has length 26 [2021-06-05 03:19:16,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:16,617 INFO L482 AbstractCegarLoop]: Abstraction has 594 states and 1515 transitions. [2021-06-05 03:19:16,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:16,617 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1515 transitions. [2021-06-05 03:19:16,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:16,617 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:16,617 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:16,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-06-05 03:19:16,618 INFO L430 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:16,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:16,618 INFO L82 PathProgramCache]: Analyzing trace with hash 256125006, now seen corresponding path program 328 times [2021-06-05 03:19:16,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:16,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224193883] [2021-06-05 03:19:16,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:16,690 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 03:19:16,690 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:16,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224193883] [2021-06-05 03:19:16,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224193883] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:16,690 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:16,690 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:16,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109650429] [2021-06-05 03:19:16,691 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:16,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:16,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:16,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:16,691 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 03:19:16,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:16,847 INFO L93 Difference]: Finished difference Result 734 states and 1848 transitions. [2021-06-05 03:19:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:16,847 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:16,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:16,848 INFO L225 Difference]: With dead ends: 734 [2021-06-05 03:19:16,848 INFO L226 Difference]: Without dead ends: 633 [2021-06-05 03:19:16,848 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 03:19:16,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-06-05 03:19:16,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 570. [2021-06-05 03:19:16,853 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 03:19:16,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1457 transitions. [2021-06-05 03:19:16,854 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1457 transitions. Word has length 26 [2021-06-05 03:19:16,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:16,854 INFO L482 AbstractCegarLoop]: Abstraction has 570 states and 1457 transitions. [2021-06-05 03:19:16,854 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 03:19:16,854 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1457 transitions. [2021-06-05 03:19:16,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:16,854 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:16,854 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:16,854 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-06-05 03:19:16,854 INFO L430 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:16,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:16,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1125569614, now seen corresponding path program 329 times [2021-06-05 03:19:16,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:16,855 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477452260] [2021-06-05 03:19:16,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:16,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:16,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477452260] [2021-06-05 03:19:16,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477452260] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:16,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:16,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:16,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851751473] [2021-06-05 03:19:16,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:16,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:16,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:16,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:16,930 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 03:19:17,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:17,124 INFO L93 Difference]: Finished difference Result 694 states and 1767 transitions. [2021-06-05 03:19:17,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:17,125 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:17,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:17,125 INFO L225 Difference]: With dead ends: 694 [2021-06-05 03:19:17,125 INFO L226 Difference]: Without dead ends: 603 [2021-06-05 03:19:17,126 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:17,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-06-05 03:19:17,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 587. [2021-06-05 03:19:17,130 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 03:19:17,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 1499 transitions. [2021-06-05 03:19:17,131 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 1499 transitions. Word has length 26 [2021-06-05 03:19:17,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:17,131 INFO L482 AbstractCegarLoop]: Abstraction has 587 states and 1499 transitions. [2021-06-05 03:19:17,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:17,131 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 1499 transitions. [2021-06-05 03:19:17,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:17,132 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:17,132 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:17,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-06-05 03:19:17,132 INFO L430 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:17,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:17,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1937772202, now seen corresponding path program 330 times [2021-06-05 03:19:17,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:17,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893023009] [2021-06-05 03:19:17,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:17,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:17,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893023009] [2021-06-05 03:19:17,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893023009] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:17,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:17,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:17,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320156808] [2021-06-05 03:19:17,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:17,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:17,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:17,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:17,189 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 03:19:17,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:17,356 INFO L93 Difference]: Finished difference Result 696 states and 1770 transitions. [2021-06-05 03:19:17,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:17,357 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:17,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:17,357 INFO L225 Difference]: With dead ends: 696 [2021-06-05 03:19:17,357 INFO L226 Difference]: Without dead ends: 600 [2021-06-05 03:19:17,357 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:17,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-06-05 03:19:17,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 582. [2021-06-05 03:19:17,362 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 03:19:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1485 transitions. [2021-06-05 03:19:17,363 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1485 transitions. Word has length 26 [2021-06-05 03:19:17,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:17,363 INFO L482 AbstractCegarLoop]: Abstraction has 582 states and 1485 transitions. [2021-06-05 03:19:17,363 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:17,363 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1485 transitions. [2021-06-05 03:19:17,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:17,364 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:17,364 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:17,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-06-05 03:19:17,364 INFO L430 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:17,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:17,364 INFO L82 PathProgramCache]: Analyzing trace with hash 908358482, now seen corresponding path program 331 times [2021-06-05 03:19:17,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:17,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271314539] [2021-06-05 03:19:17,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:17,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:17,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:17,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271314539] [2021-06-05 03:19:17,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271314539] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:17,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:17,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:17,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230022564] [2021-06-05 03:19:17,427 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:17,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:17,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:17,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:17,427 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 03:19:17,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:17,584 INFO L93 Difference]: Finished difference Result 709 states and 1796 transitions. [2021-06-05 03:19:17,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:17,585 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:17,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:17,585 INFO L225 Difference]: With dead ends: 709 [2021-06-05 03:19:17,585 INFO L226 Difference]: Without dead ends: 586 [2021-06-05 03:19:17,585 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:17,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-06-05 03:19:17,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 570. [2021-06-05 03:19:17,590 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 03:19:17,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1454 transitions. [2021-06-05 03:19:17,591 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1454 transitions. Word has length 26 [2021-06-05 03:19:17,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:17,591 INFO L482 AbstractCegarLoop]: Abstraction has 570 states and 1454 transitions. [2021-06-05 03:19:17,591 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:17,591 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1454 transitions. [2021-06-05 03:19:17,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:17,592 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:17,592 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:17,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-06-05 03:19:17,592 INFO L430 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:17,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:17,592 INFO L82 PathProgramCache]: Analyzing trace with hash 48042988, now seen corresponding path program 332 times [2021-06-05 03:19:17,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:17,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264290457] [2021-06-05 03:19:17,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:17,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:17,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:17,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264290457] [2021-06-05 03:19:17,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264290457] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:17,654 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:17,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:17,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325734684] [2021-06-05 03:19:17,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:17,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:17,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:17,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:17,655 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 03:19:17,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:17,821 INFO L93 Difference]: Finished difference Result 694 states and 1757 transitions. [2021-06-05 03:19:17,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:17,822 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 03:19:17,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:17,822 INFO L225 Difference]: With dead ends: 694 [2021-06-05 03:19:17,822 INFO L226 Difference]: Without dead ends: 613 [2021-06-05 03:19:17,822 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 03:19:17,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-06-05 03:19:17,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 569. [2021-06-05 03:19:17,827 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 03:19:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1452 transitions. [2021-06-05 03:19:17,828 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1452 transitions. Word has length 26 [2021-06-05 03:19:17,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:17,828 INFO L482 AbstractCegarLoop]: Abstraction has 569 states and 1452 transitions. [2021-06-05 03:19:17,828 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 03:19:17,828 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1452 transitions. [2021-06-05 03:19:17,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:17,828 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:17,828 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:17,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-06-05 03:19:17,829 INFO L430 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:17,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:17,829 INFO L82 PathProgramCache]: Analyzing trace with hash 917487596, now seen corresponding path program 333 times [2021-06-05 03:19:17,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:17,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742918459] [2021-06-05 03:19:17,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:17,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:17,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:17,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742918459] [2021-06-05 03:19:17,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742918459] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:17,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:17,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:17,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463170841] [2021-06-05 03:19:17,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:17,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:17,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:17,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:17,889 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 03:19:18,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:18,059 INFO L93 Difference]: Finished difference Result 696 states and 1757 transitions. [2021-06-05 03:19:18,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:18,060 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:18,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:18,060 INFO L225 Difference]: With dead ends: 696 [2021-06-05 03:19:18,061 INFO L226 Difference]: Without dead ends: 605 [2021-06-05 03:19:18,061 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:18,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-06-05 03:19:18,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 576. [2021-06-05 03:19:18,065 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 03:19:18,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1469 transitions. [2021-06-05 03:19:18,066 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1469 transitions. Word has length 26 [2021-06-05 03:19:18,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:18,066 INFO L482 AbstractCegarLoop]: Abstraction has 576 states and 1469 transitions. [2021-06-05 03:19:18,066 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:18,066 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1469 transitions. [2021-06-05 03:19:18,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:18,067 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:18,067 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:18,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-06-05 03:19:18,067 INFO L430 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:18,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:18,067 INFO L82 PathProgramCache]: Analyzing trace with hash -538070062, now seen corresponding path program 334 times [2021-06-05 03:19:18,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:18,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345746752] [2021-06-05 03:19:18,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:18,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:18,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:18,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345746752] [2021-06-05 03:19:18,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345746752] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:18,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:18,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:18,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474337011] [2021-06-05 03:19:18,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:18,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:18,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:18,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:18,137 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 03:19:18,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:18,307 INFO L93 Difference]: Finished difference Result 692 states and 1748 transitions. [2021-06-05 03:19:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:18,307 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:18,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:18,308 INFO L225 Difference]: With dead ends: 692 [2021-06-05 03:19:18,308 INFO L226 Difference]: Without dead ends: 599 [2021-06-05 03:19:18,308 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 03:19:18,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-06-05 03:19:18,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 572. [2021-06-05 03:19:18,313 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 03:19:18,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1459 transitions. [2021-06-05 03:19:18,314 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1459 transitions. Word has length 26 [2021-06-05 03:19:18,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:18,314 INFO L482 AbstractCegarLoop]: Abstraction has 572 states and 1459 transitions. [2021-06-05 03:19:18,314 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 03:19:18,314 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1459 transitions. [2021-06-05 03:19:18,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:18,314 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:18,314 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 03:19:18,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-06-05 03:19:18,314 INFO L430 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:18,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:18,315 INFO L82 PathProgramCache]: Analyzing trace with hash -158764978, now seen corresponding path program 335 times [2021-06-05 03:19:18,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:18,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974690354] [2021-06-05 03:19:18,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:18,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:18,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974690354] [2021-06-05 03:19:18,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974690354] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:18,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:18,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:18,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421010104] [2021-06-05 03:19:18,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:18,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:18,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:18,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:18,372 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 03:19:18,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:18,547 INFO L93 Difference]: Finished difference Result 712 states and 1795 transitions. [2021-06-05 03:19:18,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:18,548 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 03:19:18,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:18,549 INFO L225 Difference]: With dead ends: 712 [2021-06-05 03:19:18,549 INFO L226 Difference]: Without dead ends: 631 [2021-06-05 03:19:18,549 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:18,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2021-06-05 03:19:18,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 574. [2021-06-05 03:19:18,554 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 03:19:18,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 1469 transitions. [2021-06-05 03:19:18,554 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 1469 transitions. Word has length 26 [2021-06-05 03:19:18,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:18,555 INFO L482 AbstractCegarLoop]: Abstraction has 574 states and 1469 transitions. [2021-06-05 03:19:18,555 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:18,555 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 1469 transitions. [2021-06-05 03:19:18,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:18,555 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:18,555 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:18,555 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-06-05 03:19:18,555 INFO L430 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:18,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:18,555 INFO L82 PathProgramCache]: Analyzing trace with hash 710679630, now seen corresponding path program 336 times [2021-06-05 03:19:18,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:18,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281861757] [2021-06-05 03:19:18,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:18,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:18,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:18,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281861757] [2021-06-05 03:19:18,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281861757] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:18,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:18,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:18,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760092741] [2021-06-05 03:19:18,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:18,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:18,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:18,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:18,613 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 03:19:18,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:18,779 INFO L93 Difference]: Finished difference Result 690 states and 1756 transitions. [2021-06-05 03:19:18,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:18,779 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:18,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:18,780 INFO L225 Difference]: With dead ends: 690 [2021-06-05 03:19:18,780 INFO L226 Difference]: Without dead ends: 599 [2021-06-05 03:19:18,780 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:18,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-06-05 03:19:18,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 577. [2021-06-05 03:19:18,785 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 03:19:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1475 transitions. [2021-06-05 03:19:18,786 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1475 transitions. Word has length 26 [2021-06-05 03:19:18,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:18,786 INFO L482 AbstractCegarLoop]: Abstraction has 577 states and 1475 transitions. [2021-06-05 03:19:18,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:18,786 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1475 transitions. [2021-06-05 03:19:18,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:18,786 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:18,786 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:18,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-06-05 03:19:18,786 INFO L430 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:18,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:18,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1663603796, now seen corresponding path program 337 times [2021-06-05 03:19:18,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:18,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678949867] [2021-06-05 03:19:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:18,843 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 03:19:18,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:18,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678949867] [2021-06-05 03:19:18,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678949867] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:18,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:18,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:18,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663273422] [2021-06-05 03:19:18,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:18,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:18,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:18,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:18,844 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 03:19:18,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:18,999 INFO L93 Difference]: Finished difference Result 686 states and 1730 transitions. [2021-06-05 03:19:18,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:18,999 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 03:19:18,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:19,000 INFO L225 Difference]: With dead ends: 686 [2021-06-05 03:19:19,000 INFO L226 Difference]: Without dead ends: 597 [2021-06-05 03:19:19,000 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:19,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-06-05 03:19:19,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 575. [2021-06-05 03:19:19,005 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 03:19:19,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1467 transitions. [2021-06-05 03:19:19,006 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1467 transitions. Word has length 26 [2021-06-05 03:19:19,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:19,006 INFO L482 AbstractCegarLoop]: Abstraction has 575 states and 1467 transitions. [2021-06-05 03:19:19,006 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 03:19:19,006 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1467 transitions. [2021-06-05 03:19:19,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:19,006 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:19,006 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:19,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-06-05 03:19:19,006 INFO L430 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:19,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:19,007 INFO L82 PathProgramCache]: Analyzing trace with hash 456333896, now seen corresponding path program 338 times [2021-06-05 03:19:19,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:19,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96322906] [2021-06-05 03:19:19,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:19,076 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 03:19:19,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:19,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96322906] [2021-06-05 03:19:19,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96322906] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:19,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:19,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:19,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121016339] [2021-06-05 03:19:19,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:19,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:19,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:19,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:19,077 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 03:19:19,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:19,266 INFO L93 Difference]: Finished difference Result 678 states and 1726 transitions. [2021-06-05 03:19:19,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:19,267 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:19,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:19,267 INFO L225 Difference]: With dead ends: 678 [2021-06-05 03:19:19,267 INFO L226 Difference]: Without dead ends: 582 [2021-06-05 03:19:19,267 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:19,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-06-05 03:19:19,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 570. [2021-06-05 03:19:19,272 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 03:19:19,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1455 transitions. [2021-06-05 03:19:19,273 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1455 transitions. Word has length 26 [2021-06-05 03:19:19,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:19,273 INFO L482 AbstractCegarLoop]: Abstraction has 570 states and 1455 transitions. [2021-06-05 03:19:19,273 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 03:19:19,273 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1455 transitions. [2021-06-05 03:19:19,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:19,273 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:19,273 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 03:19:19,274 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-06-05 03:19:19,274 INFO L430 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:19,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:19,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1601393100, now seen corresponding path program 339 times [2021-06-05 03:19:19,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:19,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747614809] [2021-06-05 03:19:19,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:19,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:19,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747614809] [2021-06-05 03:19:19,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747614809] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:19,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:19,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:19,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500683117] [2021-06-05 03:19:19,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:19,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:19,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:19,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:19,331 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 03:19:19,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:19,495 INFO L93 Difference]: Finished difference Result 701 states and 1771 transitions. [2021-06-05 03:19:19,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:19,495 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:19,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:19,496 INFO L225 Difference]: With dead ends: 701 [2021-06-05 03:19:19,496 INFO L226 Difference]: Without dead ends: 610 [2021-06-05 03:19:19,496 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:19,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-06-05 03:19:19,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 585. [2021-06-05 03:19:19,501 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 03:19:19,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1488 transitions. [2021-06-05 03:19:19,502 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1488 transitions. Word has length 26 [2021-06-05 03:19:19,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:19,502 INFO L482 AbstractCegarLoop]: Abstraction has 585 states and 1488 transitions. [2021-06-05 03:19:19,502 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:19,502 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1488 transitions. [2021-06-05 03:19:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:19,502 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:19,503 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:19,503 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-06-05 03:19:19,503 INFO L430 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:19,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:19,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1301429650, now seen corresponding path program 340 times [2021-06-05 03:19:19,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:19,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432223231] [2021-06-05 03:19:19,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:19,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:19,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432223231] [2021-06-05 03:19:19,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432223231] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:19,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:19,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:19,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369229858] [2021-06-05 03:19:19,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:19,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:19,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:19,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:19,562 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 03:19:19,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:19,730 INFO L93 Difference]: Finished difference Result 693 states and 1757 transitions. [2021-06-05 03:19:19,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:19,730 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 03:19:19,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:19,731 INFO L225 Difference]: With dead ends: 693 [2021-06-05 03:19:19,731 INFO L226 Difference]: Without dead ends: 596 [2021-06-05 03:19:19,731 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:19,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-06-05 03:19:19,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 583. [2021-06-05 03:19:19,736 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 03:19:19,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1483 transitions. [2021-06-05 03:19:19,736 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1483 transitions. Word has length 26 [2021-06-05 03:19:19,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:19,737 INFO L482 AbstractCegarLoop]: Abstraction has 583 states and 1483 transitions. [2021-06-05 03:19:19,737 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 03:19:19,737 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1483 transitions. [2021-06-05 03:19:19,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:19,737 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:19,737 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 03:19:19,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-06-05 03:19:19,737 INFO L430 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:19,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:19,737 INFO L82 PathProgramCache]: Analyzing trace with hash 392582440, now seen corresponding path program 341 times [2021-06-05 03:19:19,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:19,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251507491] [2021-06-05 03:19:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:19,801 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 03:19:19,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:19,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251507491] [2021-06-05 03:19:19,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251507491] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:19,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:19,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:19,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451259111] [2021-06-05 03:19:19,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:19,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:19,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:19,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:19,802 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 03:19:19,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:19,957 INFO L93 Difference]: Finished difference Result 728 states and 1837 transitions. [2021-06-05 03:19:19,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:19,957 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:19,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:19,958 INFO L225 Difference]: With dead ends: 728 [2021-06-05 03:19:19,958 INFO L226 Difference]: Without dead ends: 613 [2021-06-05 03:19:19,958 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 03:19:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-06-05 03:19:19,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 583. [2021-06-05 03:19:19,963 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 03:19:19,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1475 transitions. [2021-06-05 03:19:19,963 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1475 transitions. Word has length 26 [2021-06-05 03:19:19,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:19,964 INFO L482 AbstractCegarLoop]: Abstraction has 583 states and 1475 transitions. [2021-06-05 03:19:19,964 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:19,964 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1475 transitions. [2021-06-05 03:19:19,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:19,964 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:19,964 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:19,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-06-05 03:19:19,964 INFO L430 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:19,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:19,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1632796106, now seen corresponding path program 342 times [2021-06-05 03:19:19,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:19,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129453909] [2021-06-05 03:19:19,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:20,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:20,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:20,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129453909] [2021-06-05 03:19:20,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129453909] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:20,021 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:20,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:20,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564235028] [2021-06-05 03:19:20,021 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:20,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:20,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:20,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:20,021 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 03:19:20,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:20,181 INFO L93 Difference]: Finished difference Result 717 states and 1804 transitions. [2021-06-05 03:19:20,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:20,181 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 03:19:20,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:20,182 INFO L225 Difference]: With dead ends: 717 [2021-06-05 03:19:20,182 INFO L226 Difference]: Without dead ends: 626 [2021-06-05 03:19:20,182 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:20,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-06-05 03:19:20,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 583. [2021-06-05 03:19:20,187 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 03:19:20,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1475 transitions. [2021-06-05 03:19:20,187 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1475 transitions. Word has length 26 [2021-06-05 03:19:20,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:20,187 INFO L482 AbstractCegarLoop]: Abstraction has 583 states and 1475 transitions. [2021-06-05 03:19:20,187 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:20,188 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1475 transitions. [2021-06-05 03:19:20,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:20,188 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:20,188 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:20,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-06-05 03:19:20,188 INFO L430 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:20,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:20,188 INFO L82 PathProgramCache]: Analyzing trace with hash 240651560, now seen corresponding path program 343 times [2021-06-05 03:19:20,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:20,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140792472] [2021-06-05 03:19:20,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:20,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:20,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140792472] [2021-06-05 03:19:20,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140792472] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:20,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:20,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:20,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735226126] [2021-06-05 03:19:20,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:20,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:20,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:20,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:20,246 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 03:19:20,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:20,423 INFO L93 Difference]: Finished difference Result 697 states and 1755 transitions. [2021-06-05 03:19:20,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:20,423 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:20,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:20,424 INFO L225 Difference]: With dead ends: 697 [2021-06-05 03:19:20,424 INFO L226 Difference]: Without dead ends: 590 [2021-06-05 03:19:20,424 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:20,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-06-05 03:19:20,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 566. [2021-06-05 03:19:20,429 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 03:19:20,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 1427 transitions. [2021-06-05 03:19:20,429 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 1427 transitions. Word has length 26 [2021-06-05 03:19:20,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:20,429 INFO L482 AbstractCegarLoop]: Abstraction has 566 states and 1427 transitions. [2021-06-05 03:19:20,429 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 03:19:20,429 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1427 transitions. [2021-06-05 03:19:20,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:20,430 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:20,430 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:20,430 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-06-05 03:19:20,430 INFO L430 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:20,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:20,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1693780104, now seen corresponding path program 344 times [2021-06-05 03:19:20,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:20,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109143620] [2021-06-05 03:19:20,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:20,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:20,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109143620] [2021-06-05 03:19:20,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109143620] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:20,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:20,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:20,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352723361] [2021-06-05 03:19:20,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:20,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:20,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:20,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:20,505 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 03:19:20,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:20,662 INFO L93 Difference]: Finished difference Result 710 states and 1782 transitions. [2021-06-05 03:19:20,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:20,662 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:20,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:20,663 INFO L225 Difference]: With dead ends: 710 [2021-06-05 03:19:20,663 INFO L226 Difference]: Without dead ends: 593 [2021-06-05 03:19:20,663 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:20,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-06-05 03:19:20,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2021-06-05 03:19:20,667 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 03:19:20,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1481 transitions. [2021-06-05 03:19:20,668 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1481 transitions. Word has length 26 [2021-06-05 03:19:20,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:20,668 INFO L482 AbstractCegarLoop]: Abstraction has 593 states and 1481 transitions. [2021-06-05 03:19:20,668 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:20,668 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1481 transitions. [2021-06-05 03:19:20,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:20,669 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:20,669 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:20,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-06-05 03:19:20,669 INFO L430 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:20,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:20,669 INFO L82 PathProgramCache]: Analyzing trace with hash -881577516, now seen corresponding path program 345 times [2021-06-05 03:19:20,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:20,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583740366] [2021-06-05 03:19:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:20,724 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 03:19:20,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:20,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583740366] [2021-06-05 03:19:20,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583740366] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:20,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:20,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:20,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966475686] [2021-06-05 03:19:20,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:20,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:20,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:20,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:20,725 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 03:19:20,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:20,878 INFO L93 Difference]: Finished difference Result 725 states and 1802 transitions. [2021-06-05 03:19:20,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:20,879 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:20,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:20,879 INFO L225 Difference]: With dead ends: 725 [2021-06-05 03:19:20,879 INFO L226 Difference]: Without dead ends: 603 [2021-06-05 03:19:20,879 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:20,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-06-05 03:19:20,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 593. [2021-06-05 03:19:20,884 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 03:19:20,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1478 transitions. [2021-06-05 03:19:20,885 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1478 transitions. Word has length 26 [2021-06-05 03:19:20,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:20,885 INFO L482 AbstractCegarLoop]: Abstraction has 593 states and 1478 transitions. [2021-06-05 03:19:20,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:20,885 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1478 transitions. [2021-06-05 03:19:20,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:20,885 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:20,885 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 03:19:20,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-06-05 03:19:20,886 INFO L430 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:20,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:20,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1910991236, now seen corresponding path program 346 times [2021-06-05 03:19:20,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:20,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923549036] [2021-06-05 03:19:20,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:20,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:20,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923549036] [2021-06-05 03:19:20,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923549036] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:20,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:20,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:20,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050892358] [2021-06-05 03:19:20,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:20,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:20,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:20,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:20,941 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 03:19:21,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:21,091 INFO L93 Difference]: Finished difference Result 740 states and 1834 transitions. [2021-06-05 03:19:21,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:21,092 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:21,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:21,092 INFO L225 Difference]: With dead ends: 740 [2021-06-05 03:19:21,092 INFO L226 Difference]: Without dead ends: 591 [2021-06-05 03:19:21,092 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:21,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-06-05 03:19:21,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 581. [2021-06-05 03:19:21,097 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 03:19:21,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1442 transitions. [2021-06-05 03:19:21,098 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1442 transitions. Word has length 26 [2021-06-05 03:19:21,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:21,098 INFO L482 AbstractCegarLoop]: Abstraction has 581 states and 1442 transitions. [2021-06-05 03:19:21,098 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 03:19:21,098 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1442 transitions. [2021-06-05 03:19:21,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:21,098 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:21,098 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:21,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-06-05 03:19:21,098 INFO L430 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:21,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:21,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1239429736, now seen corresponding path program 347 times [2021-06-05 03:19:21,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:21,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057603602] [2021-06-05 03:19:21,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:21,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:21,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057603602] [2021-06-05 03:19:21,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057603602] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:21,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:21,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:21,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670967607] [2021-06-05 03:19:21,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:21,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:21,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:21,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:21,155 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 03:19:21,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:21,312 INFO L93 Difference]: Finished difference Result 702 states and 1738 transitions. [2021-06-05 03:19:21,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:21,313 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:21,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:21,313 INFO L225 Difference]: With dead ends: 702 [2021-06-05 03:19:21,313 INFO L226 Difference]: Without dead ends: 558 [2021-06-05 03:19:21,313 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:21,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-06-05 03:19:21,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 542. [2021-06-05 03:19:21,318 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 03:19:21,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1349 transitions. [2021-06-05 03:19:21,318 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1349 transitions. Word has length 26 [2021-06-05 03:19:21,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:21,318 INFO L482 AbstractCegarLoop]: Abstraction has 542 states and 1349 transitions. [2021-06-05 03:19:21,319 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:21,319 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1349 transitions. [2021-06-05 03:19:21,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:21,319 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:21,319 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:21,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-06-05 03:19:21,319 INFO L430 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:21,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:21,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1233750690, now seen corresponding path program 348 times [2021-06-05 03:19:21,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:21,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505958442] [2021-06-05 03:19:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:21,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:21,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505958442] [2021-06-05 03:19:21,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505958442] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:21,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:21,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:21,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883380095] [2021-06-05 03:19:21,382 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:21,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:21,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:21,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:21,382 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 03:19:21,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:21,545 INFO L93 Difference]: Finished difference Result 644 states and 1595 transitions. [2021-06-05 03:19:21,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:21,545 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:21,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:21,546 INFO L225 Difference]: With dead ends: 644 [2021-06-05 03:19:21,546 INFO L226 Difference]: Without dead ends: 561 [2021-06-05 03:19:21,546 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:21,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-06-05 03:19:21,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 530. [2021-06-05 03:19:21,550 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 03:19:21,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1306 transitions. [2021-06-05 03:19:21,551 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1306 transitions. Word has length 26 [2021-06-05 03:19:21,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:21,551 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1306 transitions. [2021-06-05 03:19:21,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:21,551 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1306 transitions. [2021-06-05 03:19:21,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:21,551 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:21,551 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:21,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-06-05 03:19:21,551 INFO L430 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:21,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:21,552 INFO L82 PathProgramCache]: Analyzing trace with hash -364306082, now seen corresponding path program 349 times [2021-06-05 03:19:21,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:21,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607110278] [2021-06-05 03:19:21,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:21,611 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 03:19:21,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:21,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607110278] [2021-06-05 03:19:21,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607110278] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:21,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:21,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:21,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239052753] [2021-06-05 03:19:21,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:21,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:21,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:21,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:21,612 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 03:19:21,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:21,782 INFO L93 Difference]: Finished difference Result 663 states and 1624 transitions. [2021-06-05 03:19:21,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:21,782 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:21,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:21,783 INFO L225 Difference]: With dead ends: 663 [2021-06-05 03:19:21,783 INFO L226 Difference]: Without dead ends: 572 [2021-06-05 03:19:21,783 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:21,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-06-05 03:19:21,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 536. [2021-06-05 03:19:21,787 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 03:19:21,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1315 transitions. [2021-06-05 03:19:21,790 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1315 transitions. Word has length 26 [2021-06-05 03:19:21,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:21,790 INFO L482 AbstractCegarLoop]: Abstraction has 536 states and 1315 transitions. [2021-06-05 03:19:21,790 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:21,790 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1315 transitions. [2021-06-05 03:19:21,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:21,791 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:21,791 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 03:19:21,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-06-05 03:19:21,791 INFO L430 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:21,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:21,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1556377788, now seen corresponding path program 350 times [2021-06-05 03:19:21,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:21,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203881963] [2021-06-05 03:19:21,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:21,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:21,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:21,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203881963] [2021-06-05 03:19:21,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203881963] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:21,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:21,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:21,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025715511] [2021-06-05 03:19:21,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:21,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:21,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:21,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:21,851 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 03:19:22,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:22,010 INFO L93 Difference]: Finished difference Result 635 states and 1558 transitions. [2021-06-05 03:19:22,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:22,011 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:22,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:22,011 INFO L225 Difference]: With dead ends: 635 [2021-06-05 03:19:22,011 INFO L226 Difference]: Without dead ends: 550 [2021-06-05 03:19:22,011 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 03:19:22,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-06-05 03:19:22,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 539. [2021-06-05 03:19:22,016 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 03:19:22,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 1320 transitions. [2021-06-05 03:19:22,016 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 1320 transitions. Word has length 26 [2021-06-05 03:19:22,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:22,016 INFO L482 AbstractCegarLoop]: Abstraction has 539 states and 1320 transitions. [2021-06-05 03:19:22,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:22,017 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 1320 transitions. [2021-06-05 03:19:22,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:22,017 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:22,017 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:22,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-06-05 03:19:22,017 INFO L430 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:22,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:22,017 INFO L82 PathProgramCache]: Analyzing trace with hash -618651816, now seen corresponding path program 351 times [2021-06-05 03:19:22,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:22,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002753355] [2021-06-05 03:19:22,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:22,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:22,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002753355] [2021-06-05 03:19:22,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002753355] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:22,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:22,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:22,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608367114] [2021-06-05 03:19:22,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:22,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:22,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:22,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:22,074 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 03:19:22,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:22,232 INFO L93 Difference]: Finished difference Result 642 states and 1579 transitions. [2021-06-05 03:19:22,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:22,233 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:22,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:22,233 INFO L225 Difference]: With dead ends: 642 [2021-06-05 03:19:22,233 INFO L226 Difference]: Without dead ends: 546 [2021-06-05 03:19:22,234 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:22,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-06-05 03:19:22,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 536. [2021-06-05 03:19:22,238 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 03:19:22,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1314 transitions. [2021-06-05 03:19:22,238 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1314 transitions. Word has length 26 [2021-06-05 03:19:22,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:22,239 INFO L482 AbstractCegarLoop]: Abstraction has 536 states and 1314 transitions. [2021-06-05 03:19:22,239 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:22,239 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1314 transitions. [2021-06-05 03:19:22,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:22,239 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:22,239 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:22,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-06-05 03:19:22,239 INFO L430 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:22,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:22,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1505935746, now seen corresponding path program 352 times [2021-06-05 03:19:22,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:22,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488013556] [2021-06-05 03:19:22,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:22,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:22,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488013556] [2021-06-05 03:19:22,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488013556] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:22,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:22,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:22,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745673306] [2021-06-05 03:19:22,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:22,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:22,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:22,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:22,296 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 03:19:22,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:22,452 INFO L93 Difference]: Finished difference Result 646 states and 1576 transitions. [2021-06-05 03:19:22,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:22,452 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:22,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:22,453 INFO L225 Difference]: With dead ends: 646 [2021-06-05 03:19:22,453 INFO L226 Difference]: Without dead ends: 559 [2021-06-05 03:19:22,453 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:22,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-06-05 03:19:22,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 530. [2021-06-05 03:19:22,458 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 03:19:22,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1295 transitions. [2021-06-05 03:19:22,458 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1295 transitions. Word has length 26 [2021-06-05 03:19:22,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:22,458 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1295 transitions. [2021-06-05 03:19:22,458 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 03:19:22,458 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1295 transitions. [2021-06-05 03:19:22,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:22,459 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:22,459 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 03:19:22,459 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-06-05 03:19:22,459 INFO L430 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:22,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:22,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1618588484, now seen corresponding path program 353 times [2021-06-05 03:19:22,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:22,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608725696] [2021-06-05 03:19:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:22,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:22,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:22,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608725696] [2021-06-05 03:19:22,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608725696] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:22,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:22,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:22,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368653788] [2021-06-05 03:19:22,518 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:22,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:22,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:22,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:22,519 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 03:19:22,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:22,721 INFO L93 Difference]: Finished difference Result 658 states and 1602 transitions. [2021-06-05 03:19:22,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:22,721 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:22,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:22,722 INFO L225 Difference]: With dead ends: 658 [2021-06-05 03:19:22,722 INFO L226 Difference]: Without dead ends: 567 [2021-06-05 03:19:22,722 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 03:19:22,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-06-05 03:19:22,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 530. [2021-06-05 03:19:22,726 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 03:19:22,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1295 transitions. [2021-06-05 03:19:22,727 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1295 transitions. Word has length 26 [2021-06-05 03:19:22,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:22,727 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1295 transitions. [2021-06-05 03:19:22,727 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:22,727 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1295 transitions. [2021-06-05 03:19:22,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:22,728 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:22,728 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 03:19:22,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-06-05 03:19:22,728 INFO L430 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:22,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:22,728 INFO L82 PathProgramCache]: Analyzing trace with hash 226443938, now seen corresponding path program 354 times [2021-06-05 03:19:22,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:22,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518132441] [2021-06-05 03:19:22,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:22,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:22,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:22,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518132441] [2021-06-05 03:19:22,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518132441] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:22,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:22,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:22,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501418354] [2021-06-05 03:19:22,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:22,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:22,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:22,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:22,798 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 03:19:22,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:22,963 INFO L93 Difference]: Finished difference Result 638 states and 1564 transitions. [2021-06-05 03:19:22,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:22,964 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 03:19:22,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:22,964 INFO L225 Difference]: With dead ends: 638 [2021-06-05 03:19:22,964 INFO L226 Difference]: Without dead ends: 541 [2021-06-05 03:19:22,964 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:22,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-06-05 03:19:22,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 528. [2021-06-05 03:19:22,969 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 03:19:22,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1290 transitions. [2021-06-05 03:19:22,969 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1290 transitions. Word has length 26 [2021-06-05 03:19:22,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:22,969 INFO L482 AbstractCegarLoop]: Abstraction has 528 states and 1290 transitions. [2021-06-05 03:19:22,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:22,969 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1290 transitions. [2021-06-05 03:19:22,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:22,970 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:22,970 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:22,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-06-05 03:19:22,970 INFO L430 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:22,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:22,970 INFO L82 PathProgramCache]: Analyzing trace with hash 495599698, now seen corresponding path program 355 times [2021-06-05 03:19:22,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:22,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100851255] [2021-06-05 03:19:22,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:23,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:23,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:23,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100851255] [2021-06-05 03:19:23,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100851255] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:23,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:23,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:23,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025505194] [2021-06-05 03:19:23,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:23,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:23,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:23,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:23,028 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 03:19:23,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:23,183 INFO L93 Difference]: Finished difference Result 621 states and 1513 transitions. [2021-06-05 03:19:23,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:23,184 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:23,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:23,184 INFO L225 Difference]: With dead ends: 621 [2021-06-05 03:19:23,184 INFO L226 Difference]: Without dead ends: 536 [2021-06-05 03:19:23,185 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 03:19:23,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-06-05 03:19:23,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 516. [2021-06-05 03:19:23,189 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 03:19:23,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1260 transitions. [2021-06-05 03:19:23,189 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1260 transitions. Word has length 26 [2021-06-05 03:19:23,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:23,189 INFO L482 AbstractCegarLoop]: Abstraction has 516 states and 1260 transitions. [2021-06-05 03:19:23,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:23,189 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1260 transitions. [2021-06-05 03:19:23,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:23,190 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:23,190 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 03:19:23,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-06-05 03:19:23,190 INFO L430 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:23,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:23,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1679429906, now seen corresponding path program 356 times [2021-06-05 03:19:23,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:23,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414116141] [2021-06-05 03:19:23,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:23,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:23,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:23,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414116141] [2021-06-05 03:19:23,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414116141] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:23,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:23,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:23,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856341339] [2021-06-05 03:19:23,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:23,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:23,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:23,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:23,250 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 03:19:23,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:23,408 INFO L93 Difference]: Finished difference Result 643 states and 1566 transitions. [2021-06-05 03:19:23,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:23,408 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:23,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:23,409 INFO L225 Difference]: With dead ends: 643 [2021-06-05 03:19:23,409 INFO L226 Difference]: Without dead ends: 541 [2021-06-05 03:19:23,409 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:23,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-06-05 03:19:23,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 501. [2021-06-05 03:19:23,413 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 03:19:23,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 1231 transitions. [2021-06-05 03:19:23,413 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 1231 transitions. Word has length 26 [2021-06-05 03:19:23,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:23,414 INFO L482 AbstractCegarLoop]: Abstraction has 501 states and 1231 transitions. [2021-06-05 03:19:23,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:23,414 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 1231 transitions. [2021-06-05 03:19:23,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:23,414 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:23,414 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:23,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-06-05 03:19:23,414 INFO L430 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:23,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:23,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1763388200, now seen corresponding path program 357 times [2021-06-05 03:19:23,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:23,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565645111] [2021-06-05 03:19:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:23,471 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 03:19:23,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:23,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565645111] [2021-06-05 03:19:23,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565645111] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:23,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:23,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:23,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694529823] [2021-06-05 03:19:23,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:23,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:23,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:23,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:23,472 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 03:19:23,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:23,632 INFO L93 Difference]: Finished difference Result 600 states and 1466 transitions. [2021-06-05 03:19:23,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:23,633 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 03:19:23,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:23,633 INFO L225 Difference]: With dead ends: 600 [2021-06-05 03:19:23,633 INFO L226 Difference]: Without dead ends: 459 [2021-06-05 03:19:23,633 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:23,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-06-05 03:19:23,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 419. [2021-06-05 03:19:23,637 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 03:19:23,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1031 transitions. [2021-06-05 03:19:23,637 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1031 transitions. Word has length 26 [2021-06-05 03:19:23,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:23,637 INFO L482 AbstractCegarLoop]: Abstraction has 419 states and 1031 transitions. [2021-06-05 03:19:23,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:23,638 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1031 transitions. [2021-06-05 03:19:23,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:23,638 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:23,638 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:23,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-06-05 03:19:23,638 INFO L430 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:23,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:23,638 INFO L82 PathProgramCache]: Analyzing trace with hash 323941484, now seen corresponding path program 358 times [2021-06-05 03:19:23,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:23,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835401240] [2021-06-05 03:19:23,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:23,712 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 03:19:23,712 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:23,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835401240] [2021-06-05 03:19:23,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835401240] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:23,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:23,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:23,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219887941] [2021-06-05 03:19:23,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:23,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:23,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:23,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:23,713 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 03:19:23,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:23,866 INFO L93 Difference]: Finished difference Result 544 states and 1325 transitions. [2021-06-05 03:19:23,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:23,867 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:23,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:23,867 INFO L225 Difference]: With dead ends: 544 [2021-06-05 03:19:23,867 INFO L226 Difference]: Without dead ends: 423 [2021-06-05 03:19:23,867 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 03:19:23,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-06-05 03:19:23,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 419. [2021-06-05 03:19:23,871 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 03:19:23,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1021 transitions. [2021-06-05 03:19:23,871 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1021 transitions. Word has length 26 [2021-06-05 03:19:23,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:23,871 INFO L482 AbstractCegarLoop]: Abstraction has 419 states and 1021 transitions. [2021-06-05 03:19:23,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:23,871 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1021 transitions. [2021-06-05 03:19:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:23,872 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:23,872 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 03:19:23,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-06-05 03:19:23,872 INFO L430 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:23,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:23,872 INFO L82 PathProgramCache]: Analyzing trace with hash 2082614990, now seen corresponding path program 359 times [2021-06-05 03:19:23,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:23,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998707326] [2021-06-05 03:19:23,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:23,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:23,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998707326] [2021-06-05 03:19:23,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998707326] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:23,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:23,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:23,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406341386] [2021-06-05 03:19:23,931 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:23,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:23,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:23,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:23,931 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 03:19:24,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:24,080 INFO L93 Difference]: Finished difference Result 545 states and 1321 transitions. [2021-06-05 03:19:24,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:24,081 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 03:19:24,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:24,081 INFO L225 Difference]: With dead ends: 545 [2021-06-05 03:19:24,081 INFO L226 Difference]: Without dead ends: 429 [2021-06-05 03:19:24,081 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:24,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-06-05 03:19:24,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 423. [2021-06-05 03:19:24,085 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 03:19:24,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1028 transitions. [2021-06-05 03:19:24,085 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1028 transitions. Word has length 26 [2021-06-05 03:19:24,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:24,085 INFO L482 AbstractCegarLoop]: Abstraction has 423 states and 1028 transitions. [2021-06-05 03:19:24,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:24,086 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1028 transitions. [2021-06-05 03:19:24,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:24,086 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:24,086 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:24,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-06-05 03:19:24,086 INFO L430 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:24,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:24,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1483348368, now seen corresponding path program 360 times [2021-06-05 03:19:24,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:24,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913499808] [2021-06-05 03:19:24,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:24,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:24,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:24,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913499808] [2021-06-05 03:19:24,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913499808] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:24,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:24,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:24,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424980784] [2021-06-05 03:19:24,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:24,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:24,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:24,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:24,145 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 03:19:24,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:24,296 INFO L93 Difference]: Finished difference Result 536 states and 1302 transitions. [2021-06-05 03:19:24,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:24,296 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:24,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:24,297 INFO L225 Difference]: With dead ends: 536 [2021-06-05 03:19:24,297 INFO L226 Difference]: Without dead ends: 417 [2021-06-05 03:19:24,297 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 03:19:24,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-06-05 03:19:24,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 409. [2021-06-05 03:19:24,300 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 03:19:24,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1001 transitions. [2021-06-05 03:19:24,300 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 1001 transitions. Word has length 26 [2021-06-05 03:19:24,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:24,301 INFO L482 AbstractCegarLoop]: Abstraction has 409 states and 1001 transitions. [2021-06-05 03:19:24,301 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:24,301 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1001 transitions. [2021-06-05 03:19:24,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:24,301 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:24,301 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:24,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-06-05 03:19:24,301 INFO L430 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:24,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:24,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1622263662, now seen corresponding path program 361 times [2021-06-05 03:19:24,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:24,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213338481] [2021-06-05 03:19:24,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:24,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:24,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213338481] [2021-06-05 03:19:24,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213338481] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:24,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:24,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:19:24,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446588293] [2021-06-05 03:19:24,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:19:24,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:24,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:19:24,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:24,357 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 03:19:24,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:24,472 INFO L93 Difference]: Finished difference Result 541 states and 1317 transitions. [2021-06-05 03:19:24,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:19:24,473 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 03:19:24,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:24,473 INFO L225 Difference]: With dead ends: 541 [2021-06-05 03:19:24,473 INFO L226 Difference]: Without dead ends: 430 [2021-06-05 03:19:24,473 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 03:19:24,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-06-05 03:19:24,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 426. [2021-06-05 03:19:24,477 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 03:19:24,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1032 transitions. [2021-06-05 03:19:24,477 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1032 transitions. Word has length 26 [2021-06-05 03:19:24,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:24,477 INFO L482 AbstractCegarLoop]: Abstraction has 426 states and 1032 transitions. [2021-06-05 03:19:24,477 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 03:19:24,478 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1032 transitions. [2021-06-05 03:19:24,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:24,478 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:24,478 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:24,478 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-06-05 03:19:24,478 INFO L430 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:24,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:24,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1764452498, now seen corresponding path program 362 times [2021-06-05 03:19:24,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:24,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857719392] [2021-06-05 03:19:24,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:24,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:24,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857719392] [2021-06-05 03:19:24,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857719392] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:24,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:24,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:19:24,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790282769] [2021-06-05 03:19:24,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:19:24,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:24,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:19:24,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:24,526 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 03:19:24,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:24,641 INFO L93 Difference]: Finished difference Result 544 states and 1316 transitions. [2021-06-05 03:19:24,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:19:24,642 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 03:19:24,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:24,642 INFO L225 Difference]: With dead ends: 544 [2021-06-05 03:19:24,642 INFO L226 Difference]: Without dead ends: 444 [2021-06-05 03:19:24,642 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:24,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-06-05 03:19:24,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 431. [2021-06-05 03:19:24,646 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 03:19:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1043 transitions. [2021-06-05 03:19:24,646 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1043 transitions. Word has length 26 [2021-06-05 03:19:24,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:24,646 INFO L482 AbstractCegarLoop]: Abstraction has 431 states and 1043 transitions. [2021-06-05 03:19:24,646 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 03:19:24,646 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1043 transitions. [2021-06-05 03:19:24,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:24,647 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:24,647 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 03:19:24,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-06-05 03:19:24,647 INFO L430 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:24,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:24,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1609938832, now seen corresponding path program 363 times [2021-06-05 03:19:24,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:24,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620764873] [2021-06-05 03:19:24,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:24,702 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 03:19:24,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:24,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620764873] [2021-06-05 03:19:24,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620764873] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:24,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:24,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:19:24,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888366982] [2021-06-05 03:19:24,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:19:24,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:24,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:19:24,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:24,702 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 03:19:24,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:24,824 INFO L93 Difference]: Finished difference Result 539 states and 1307 transitions. [2021-06-05 03:19:24,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:19:24,825 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 03:19:24,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:24,825 INFO L225 Difference]: With dead ends: 539 [2021-06-05 03:19:24,825 INFO L226 Difference]: Without dead ends: 431 [2021-06-05 03:19:24,825 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 03:19:24,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-06-05 03:19:24,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 414. [2021-06-05 03:19:24,829 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 03:19:24,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1010 transitions. [2021-06-05 03:19:24,829 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1010 transitions. Word has length 26 [2021-06-05 03:19:24,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:24,829 INFO L482 AbstractCegarLoop]: Abstraction has 414 states and 1010 transitions. [2021-06-05 03:19:24,829 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 03:19:24,829 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1010 transitions. [2021-06-05 03:19:24,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:24,830 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:24,830 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:24,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-06-05 03:19:24,830 INFO L430 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:24,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:24,830 INFO L82 PathProgramCache]: Analyzing trace with hash 2058833742, now seen corresponding path program 364 times [2021-06-05 03:19:24,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:24,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986539294] [2021-06-05 03:19:24,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:24,886 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 03:19:24,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:24,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986539294] [2021-06-05 03:19:24,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986539294] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:24,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:24,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:24,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13244079] [2021-06-05 03:19:24,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:24,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:24,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:24,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:24,887 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 03:19:25,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:25,040 INFO L93 Difference]: Finished difference Result 552 states and 1354 transitions. [2021-06-05 03:19:25,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:25,041 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 03:19:25,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:25,041 INFO L225 Difference]: With dead ends: 552 [2021-06-05 03:19:25,041 INFO L226 Difference]: Without dead ends: 447 [2021-06-05 03:19:25,041 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:25,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-06-05 03:19:25,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 426. [2021-06-05 03:19:25,045 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 03:19:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1049 transitions. [2021-06-05 03:19:25,045 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1049 transitions. Word has length 26 [2021-06-05 03:19:25,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:25,046 INFO L482 AbstractCegarLoop]: Abstraction has 426 states and 1049 transitions. [2021-06-05 03:19:25,046 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 03:19:25,046 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1049 transitions. [2021-06-05 03:19:25,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:25,046 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:25,046 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:25,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-06-05 03:19:25,046 INFO L430 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:25,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:25,046 INFO L82 PathProgramCache]: Analyzing trace with hash -331419052, now seen corresponding path program 365 times [2021-06-05 03:19:25,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:25,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100868002] [2021-06-05 03:19:25,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:25,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:25,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:25,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100868002] [2021-06-05 03:19:25,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100868002] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:25,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:25,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:25,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183487330] [2021-06-05 03:19:25,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:25,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:25,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:25,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:25,106 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 03:19:25,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:25,285 INFO L93 Difference]: Finished difference Result 587 states and 1441 transitions. [2021-06-05 03:19:25,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:25,285 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:25,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:25,286 INFO L225 Difference]: With dead ends: 587 [2021-06-05 03:19:25,286 INFO L226 Difference]: Without dead ends: 454 [2021-06-05 03:19:25,286 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:25,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-06-05 03:19:25,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 438. [2021-06-05 03:19:25,290 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 03:19:25,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1076 transitions. [2021-06-05 03:19:25,290 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1076 transitions. Word has length 26 [2021-06-05 03:19:25,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:25,290 INFO L482 AbstractCegarLoop]: Abstraction has 438 states and 1076 transitions. [2021-06-05 03:19:25,290 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:25,290 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1076 transitions. [2021-06-05 03:19:25,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:25,291 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:25,291 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:25,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-06-05 03:19:25,291 INFO L430 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:25,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:25,291 INFO L82 PathProgramCache]: Analyzing trace with hash -2118876052, now seen corresponding path program 366 times [2021-06-05 03:19:25,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:25,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121700982] [2021-06-05 03:19:25,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:25,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:25,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:25,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121700982] [2021-06-05 03:19:25,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121700982] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:25,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:25,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:25,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137874876] [2021-06-05 03:19:25,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:25,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:25,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:25,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:25,351 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 03:19:25,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:25,518 INFO L93 Difference]: Finished difference Result 557 states and 1384 transitions. [2021-06-05 03:19:25,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:25,518 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 03:19:25,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:25,519 INFO L225 Difference]: With dead ends: 557 [2021-06-05 03:19:25,519 INFO L226 Difference]: Without dead ends: 460 [2021-06-05 03:19:25,519 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:25,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-06-05 03:19:25,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 443. [2021-06-05 03:19:25,523 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 03:19:25,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1091 transitions. [2021-06-05 03:19:25,523 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1091 transitions. Word has length 26 [2021-06-05 03:19:25,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:25,523 INFO L482 AbstractCegarLoop]: Abstraction has 443 states and 1091 transitions. [2021-06-05 03:19:25,523 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:25,523 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1091 transitions. [2021-06-05 03:19:25,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:25,524 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:25,524 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 03:19:25,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-06-05 03:19:25,524 INFO L430 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:25,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:25,524 INFO L82 PathProgramCache]: Analyzing trace with hash 607162702, now seen corresponding path program 367 times [2021-06-05 03:19:25,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:25,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196964253] [2021-06-05 03:19:25,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:25,580 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 03:19:25,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:25,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196964253] [2021-06-05 03:19:25,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196964253] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:25,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:25,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:25,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854695483] [2021-06-05 03:19:25,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:25,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:25,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:25,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:25,580 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 03:19:25,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:25,735 INFO L93 Difference]: Finished difference Result 553 states and 1364 transitions. [2021-06-05 03:19:25,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:25,735 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:25,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:25,736 INFO L225 Difference]: With dead ends: 553 [2021-06-05 03:19:25,736 INFO L226 Difference]: Without dead ends: 448 [2021-06-05 03:19:25,736 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:25,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-06-05 03:19:25,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 426. [2021-06-05 03:19:25,740 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 03:19:25,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1039 transitions. [2021-06-05 03:19:25,740 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1039 transitions. Word has length 26 [2021-06-05 03:19:25,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:25,740 INFO L482 AbstractCegarLoop]: Abstraction has 426 states and 1039 transitions. [2021-06-05 03:19:25,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:25,740 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1039 transitions. [2021-06-05 03:19:25,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:25,741 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:25,741 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 03:19:25,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-06-05 03:19:25,741 INFO L430 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:25,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:25,741 INFO L82 PathProgramCache]: Analyzing trace with hash 860847822, now seen corresponding path program 368 times [2021-06-05 03:19:25,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:25,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268955409] [2021-06-05 03:19:25,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:25,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:25,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268955409] [2021-06-05 03:19:25,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268955409] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:25,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:25,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:25,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267218212] [2021-06-05 03:19:25,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:25,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:25,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:25,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:25,798 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 03:19:25,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:25,943 INFO L93 Difference]: Finished difference Result 558 states and 1354 transitions. [2021-06-05 03:19:25,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:25,944 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:25,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:25,944 INFO L225 Difference]: With dead ends: 558 [2021-06-05 03:19:25,944 INFO L226 Difference]: Without dead ends: 451 [2021-06-05 03:19:25,944 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:25,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-06-05 03:19:25,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 436. [2021-06-05 03:19:25,948 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 03:19:25,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1061 transitions. [2021-06-05 03:19:25,948 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1061 transitions. Word has length 26 [2021-06-05 03:19:25,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:25,948 INFO L482 AbstractCegarLoop]: Abstraction has 436 states and 1061 transitions. [2021-06-05 03:19:25,948 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 03:19:25,948 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1061 transitions. [2021-06-05 03:19:25,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:25,949 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:25,949 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:25,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-06-05 03:19:25,949 INFO L430 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:25,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:25,949 INFO L82 PathProgramCache]: Analyzing trace with hash 261581200, now seen corresponding path program 369 times [2021-06-05 03:19:25,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:25,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776717248] [2021-06-05 03:19:25,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:26,005 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 03:19:26,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:26,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776717248] [2021-06-05 03:19:26,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776717248] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:26,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:26,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:26,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655224341] [2021-06-05 03:19:26,005 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:26,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:26,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:26,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:26,006 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 03:19:26,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:26,157 INFO L93 Difference]: Finished difference Result 542 states and 1322 transitions. [2021-06-05 03:19:26,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:26,158 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:26,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:26,158 INFO L225 Difference]: With dead ends: 542 [2021-06-05 03:19:26,158 INFO L226 Difference]: Without dead ends: 443 [2021-06-05 03:19:26,158 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:26,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-06-05 03:19:26,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2021-06-05 03:19:26,162 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 03:19:26,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1066 transitions. [2021-06-05 03:19:26,162 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1066 transitions. Word has length 26 [2021-06-05 03:19:26,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:26,163 INFO L482 AbstractCegarLoop]: Abstraction has 438 states and 1066 transitions. [2021-06-05 03:19:26,163 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 03:19:26,163 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1066 transitions. [2021-06-05 03:19:26,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:26,163 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:26,163 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 03:19:26,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-06-05 03:19:26,163 INFO L430 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:26,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:26,163 INFO L82 PathProgramCache]: Analyzing trace with hash 654039856, now seen corresponding path program 370 times [2021-06-05 03:19:26,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:26,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150145746] [2021-06-05 03:19:26,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:26,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:26,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150145746] [2021-06-05 03:19:26,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150145746] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:26,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:26,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:26,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223359651] [2021-06-05 03:19:26,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:26,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:26,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:26,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:26,220 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 03:19:26,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:26,368 INFO L93 Difference]: Finished difference Result 571 states and 1384 transitions. [2021-06-05 03:19:26,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:26,368 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 03:19:26,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:26,369 INFO L225 Difference]: With dead ends: 571 [2021-06-05 03:19:26,369 INFO L226 Difference]: Without dead ends: 461 [2021-06-05 03:19:26,369 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:26,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-06-05 03:19:26,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 445. [2021-06-05 03:19:26,372 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 03:19:26,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1082 transitions. [2021-06-05 03:19:26,373 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1082 transitions. Word has length 26 [2021-06-05 03:19:26,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:26,373 INFO L482 AbstractCegarLoop]: Abstraction has 445 states and 1082 transitions. [2021-06-05 03:19:26,373 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 03:19:26,373 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1082 transitions. [2021-06-05 03:19:26,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:26,374 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:26,374 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:26,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-06-05 03:19:26,374 INFO L430 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:26,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:26,374 INFO L82 PathProgramCache]: Analyzing trace with hash -850798962, now seen corresponding path program 371 times [2021-06-05 03:19:26,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:26,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689367980] [2021-06-05 03:19:26,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:26,431 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 03:19:26,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:26,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689367980] [2021-06-05 03:19:26,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689367980] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:26,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:26,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:26,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173187781] [2021-06-05 03:19:26,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:26,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:26,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:26,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:26,432 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 03:19:26,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:26,602 INFO L93 Difference]: Finished difference Result 570 states and 1380 transitions. [2021-06-05 03:19:26,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:26,602 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:26,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:26,603 INFO L225 Difference]: With dead ends: 570 [2021-06-05 03:19:26,603 INFO L226 Difference]: Without dead ends: 468 [2021-06-05 03:19:26,603 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:26,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-06-05 03:19:26,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 452. [2021-06-05 03:19:26,606 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 03:19:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1097 transitions. [2021-06-05 03:19:26,607 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1097 transitions. Word has length 26 [2021-06-05 03:19:26,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:26,607 INFO L482 AbstractCegarLoop]: Abstraction has 452 states and 1097 transitions. [2021-06-05 03:19:26,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:26,607 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1097 transitions. [2021-06-05 03:19:26,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:26,607 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:26,607 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 03:19:26,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-06-05 03:19:26,608 INFO L430 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:26,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:26,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1773999346, now seen corresponding path program 372 times [2021-06-05 03:19:26,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:26,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807412813] [2021-06-05 03:19:26,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:26,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:26,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807412813] [2021-06-05 03:19:26,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807412813] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:26,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:26,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:26,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265079593] [2021-06-05 03:19:26,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:26,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:26,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:26,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:26,674 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 03:19:26,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:26,825 INFO L93 Difference]: Finished difference Result 564 states and 1379 transitions. [2021-06-05 03:19:26,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:26,825 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:26,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:26,825 INFO L225 Difference]: With dead ends: 564 [2021-06-05 03:19:26,826 INFO L226 Difference]: Without dead ends: 467 [2021-06-05 03:19:26,826 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:26,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-06-05 03:19:26,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 457. [2021-06-05 03:19:26,829 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 03:19:26,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1112 transitions. [2021-06-05 03:19:26,830 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 1112 transitions. Word has length 26 [2021-06-05 03:19:26,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:26,830 INFO L482 AbstractCegarLoop]: Abstraction has 457 states and 1112 transitions. [2021-06-05 03:19:26,830 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:26,830 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 1112 transitions. [2021-06-05 03:19:26,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:26,830 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:26,830 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:26,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-06-05 03:19:26,830 INFO L430 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:26,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:26,831 INFO L82 PathProgramCache]: Analyzing trace with hash 381854800, now seen corresponding path program 373 times [2021-06-05 03:19:26,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:26,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735701709] [2021-06-05 03:19:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:26,887 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 03:19:26,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:26,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735701709] [2021-06-05 03:19:26,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735701709] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:26,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:26,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:26,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339519185] [2021-06-05 03:19:26,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:26,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:26,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:26,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:26,888 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 03:19:27,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:27,031 INFO L93 Difference]: Finished difference Result 564 states and 1377 transitions. [2021-06-05 03:19:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:27,031 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 03:19:27,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:27,032 INFO L225 Difference]: With dead ends: 564 [2021-06-05 03:19:27,032 INFO L226 Difference]: Without dead ends: 460 [2021-06-05 03:19:27,032 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:27,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-06-05 03:19:27,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 445. [2021-06-05 03:19:27,036 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 03:19:27,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1081 transitions. [2021-06-05 03:19:27,036 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1081 transitions. Word has length 26 [2021-06-05 03:19:27,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:27,037 INFO L482 AbstractCegarLoop]: Abstraction has 445 states and 1081 transitions. [2021-06-05 03:19:27,037 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 03:19:27,037 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1081 transitions. [2021-06-05 03:19:27,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:27,037 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:27,037 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 03:19:27,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-06-05 03:19:27,037 INFO L430 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:27,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:27,037 INFO L82 PathProgramCache]: Analyzing trace with hash 558338404, now seen corresponding path program 374 times [2021-06-05 03:19:27,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:27,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651685347] [2021-06-05 03:19:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:27,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:27,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:27,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651685347] [2021-06-05 03:19:27,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651685347] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:27,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:27,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:27,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40658609] [2021-06-05 03:19:27,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:27,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:27,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:27,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:27,093 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 03:19:27,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:27,233 INFO L93 Difference]: Finished difference Result 598 states and 1453 transitions. [2021-06-05 03:19:27,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:27,233 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:27,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:27,234 INFO L225 Difference]: With dead ends: 598 [2021-06-05 03:19:27,234 INFO L226 Difference]: Without dead ends: 471 [2021-06-05 03:19:27,234 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:27,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-06-05 03:19:27,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 445. [2021-06-05 03:19:27,238 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 03:19:27,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1077 transitions. [2021-06-05 03:19:27,238 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1077 transitions. Word has length 26 [2021-06-05 03:19:27,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:27,238 INFO L482 AbstractCegarLoop]: Abstraction has 445 states and 1077 transitions. [2021-06-05 03:19:27,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:27,238 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1077 transitions. [2021-06-05 03:19:27,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:27,239 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:27,239 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:27,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-06-05 03:19:27,239 INFO L430 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:27,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:27,239 INFO L82 PathProgramCache]: Analyzing trace with hash 675595906, now seen corresponding path program 375 times [2021-06-05 03:19:27,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:27,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781051836] [2021-06-05 03:19:27,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:27,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:27,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:27,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781051836] [2021-06-05 03:19:27,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781051836] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:27,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:27,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:27,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878535548] [2021-06-05 03:19:27,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:27,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:27,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:27,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:27,295 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 03:19:27,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:27,441 INFO L93 Difference]: Finished difference Result 583 states and 1427 transitions. [2021-06-05 03:19:27,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:27,441 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:27,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:27,442 INFO L225 Difference]: With dead ends: 583 [2021-06-05 03:19:27,442 INFO L226 Difference]: Without dead ends: 464 [2021-06-05 03:19:27,442 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:27,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-06-05 03:19:27,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 450. [2021-06-05 03:19:27,445 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 03:19:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1092 transitions. [2021-06-05 03:19:27,446 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1092 transitions. Word has length 26 [2021-06-05 03:19:27,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:27,446 INFO L482 AbstractCegarLoop]: Abstraction has 450 states and 1092 transitions. [2021-06-05 03:19:27,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:27,446 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1092 transitions. [2021-06-05 03:19:27,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:27,447 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:27,447 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:27,447 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-06-05 03:19:27,447 INFO L430 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:27,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:27,447 INFO L82 PathProgramCache]: Analyzing trace with hash -893332636, now seen corresponding path program 376 times [2021-06-05 03:19:27,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:27,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199232073] [2021-06-05 03:19:27,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:27,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:27,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:27,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199232073] [2021-06-05 03:19:27,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199232073] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:27,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:27,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:27,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002707124] [2021-06-05 03:19:27,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:27,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:27,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:27,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:27,504 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 03:19:27,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:27,646 INFO L93 Difference]: Finished difference Result 599 states and 1449 transitions. [2021-06-05 03:19:27,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:27,646 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:27,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:27,646 INFO L225 Difference]: With dead ends: 599 [2021-06-05 03:19:27,646 INFO L226 Difference]: Without dead ends: 472 [2021-06-05 03:19:27,647 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:27,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-06-05 03:19:27,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 450. [2021-06-05 03:19:27,650 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 03:19:27,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1072 transitions. [2021-06-05 03:19:27,651 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1072 transitions. Word has length 26 [2021-06-05 03:19:27,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:27,651 INFO L482 AbstractCegarLoop]: Abstraction has 450 states and 1072 transitions. [2021-06-05 03:19:27,651 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:27,651 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1072 transitions. [2021-06-05 03:19:27,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:27,651 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:27,651 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:27,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-06-05 03:19:27,651 INFO L430 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:27,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:27,652 INFO L82 PathProgramCache]: Analyzing trace with hash -700651216, now seen corresponding path program 377 times [2021-06-05 03:19:27,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:27,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194404021] [2021-06-05 03:19:27,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:27,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:27,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:27,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194404021] [2021-06-05 03:19:27,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194404021] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:27,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:27,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:27,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914229026] [2021-06-05 03:19:27,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:27,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:27,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:27,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:27,714 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 03:19:27,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:27,880 INFO L93 Difference]: Finished difference Result 553 states and 1321 transitions. [2021-06-05 03:19:27,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:27,880 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:27,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:27,881 INFO L225 Difference]: With dead ends: 553 [2021-06-05 03:19:27,881 INFO L226 Difference]: Without dead ends: 420 [2021-06-05 03:19:27,881 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:27,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-06-05 03:19:27,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 403. [2021-06-05 03:19:27,886 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 03:19:27,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 960 transitions. [2021-06-05 03:19:27,887 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 960 transitions. Word has length 26 [2021-06-05 03:19:27,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:27,887 INFO L482 AbstractCegarLoop]: Abstraction has 403 states and 960 transitions. [2021-06-05 03:19:27,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:27,887 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 960 transitions. [2021-06-05 03:19:27,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:27,887 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:27,887 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:27,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-06-05 03:19:27,887 INFO L430 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:27,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:27,888 INFO L82 PathProgramCache]: Analyzing trace with hash 25600402, now seen corresponding path program 378 times [2021-06-05 03:19:27,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:27,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157192890] [2021-06-05 03:19:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:27,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:27,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157192890] [2021-06-05 03:19:27,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157192890] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:27,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:27,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:19:27,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638340160] [2021-06-05 03:19:27,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:19:27,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:27,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:19:27,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:27,949 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 03:19:28,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:28,069 INFO L93 Difference]: Finished difference Result 542 states and 1283 transitions. [2021-06-05 03:19:28,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:19:28,070 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 03:19:28,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:28,070 INFO L225 Difference]: With dead ends: 542 [2021-06-05 03:19:28,070 INFO L226 Difference]: Without dead ends: 426 [2021-06-05 03:19:28,070 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 03:19:28,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-06-05 03:19:28,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 413. [2021-06-05 03:19:28,074 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 03:19:28,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 974 transitions. [2021-06-05 03:19:28,074 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 974 transitions. Word has length 26 [2021-06-05 03:19:28,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:28,074 INFO L482 AbstractCegarLoop]: Abstraction has 413 states and 974 transitions. [2021-06-05 03:19:28,074 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 03:19:28,074 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 974 transitions. [2021-06-05 03:19:28,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:28,075 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:28,075 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 03:19:28,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2021-06-05 03:19:28,075 INFO L430 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:28,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:28,075 INFO L82 PathProgramCache]: Analyzing trace with hash -573666220, now seen corresponding path program 379 times [2021-06-05 03:19:28,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:28,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468925871] [2021-06-05 03:19:28,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:28,133 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 03:19:28,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:28,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468925871] [2021-06-05 03:19:28,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468925871] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:28,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:28,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:28,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839935954] [2021-06-05 03:19:28,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:28,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:28,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:28,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:28,134 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 03:19:28,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:28,279 INFO L93 Difference]: Finished difference Result 537 states and 1263 transitions. [2021-06-05 03:19:28,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:28,279 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:28,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:28,280 INFO L225 Difference]: With dead ends: 537 [2021-06-05 03:19:28,280 INFO L226 Difference]: Without dead ends: 418 [2021-06-05 03:19:28,280 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:28,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-06-05 03:19:28,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 403. [2021-06-05 03:19:28,283 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 03:19:28,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 952 transitions. [2021-06-05 03:19:28,284 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 952 transitions. Word has length 26 [2021-06-05 03:19:28,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:28,284 INFO L482 AbstractCegarLoop]: Abstraction has 403 states and 952 transitions. [2021-06-05 03:19:28,284 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:28,284 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 952 transitions. [2021-06-05 03:19:28,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:28,284 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:28,284 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:28,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2021-06-05 03:19:28,284 INFO L430 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:28,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:28,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1455837904, now seen corresponding path program 380 times [2021-06-05 03:19:28,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:28,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977959470] [2021-06-05 03:19:28,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:28,342 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 03:19:28,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:28,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977959470] [2021-06-05 03:19:28,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977959470] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:28,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:28,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:28,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690699504] [2021-06-05 03:19:28,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:28,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:28,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:28,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:28,343 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 03:19:28,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:28,501 INFO L93 Difference]: Finished difference Result 526 states and 1249 transitions. [2021-06-05 03:19:28,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:28,501 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:28,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:28,502 INFO L225 Difference]: With dead ends: 526 [2021-06-05 03:19:28,502 INFO L226 Difference]: Without dead ends: 416 [2021-06-05 03:19:28,502 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 03:19:28,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-06-05 03:19:28,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 401. [2021-06-05 03:19:28,505 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 03:19:28,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 946 transitions. [2021-06-05 03:19:28,506 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 946 transitions. Word has length 26 [2021-06-05 03:19:28,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:28,506 INFO L482 AbstractCegarLoop]: Abstraction has 401 states and 946 transitions. [2021-06-05 03:19:28,506 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:28,506 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 946 transitions. [2021-06-05 03:19:28,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:28,506 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:28,506 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:28,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2021-06-05 03:19:28,507 INFO L430 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:28,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:28,507 INFO L82 PathProgramCache]: Analyzing trace with hash -2055104526, now seen corresponding path program 381 times [2021-06-05 03:19:28,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:28,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736864474] [2021-06-05 03:19:28,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:28,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:28,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:28,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736864474] [2021-06-05 03:19:28,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736864474] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:28,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:28,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:28,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134720218] [2021-06-05 03:19:28,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:28,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:28,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:28,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:28,568 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 03:19:28,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:28,717 INFO L93 Difference]: Finished difference Result 506 states and 1204 transitions. [2021-06-05 03:19:28,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:28,717 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:28,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:28,717 INFO L225 Difference]: With dead ends: 506 [2021-06-05 03:19:28,718 INFO L226 Difference]: Without dead ends: 407 [2021-06-05 03:19:28,718 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:28,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-06-05 03:19:28,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 401. [2021-06-05 03:19:28,721 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 03:19:28,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 945 transitions. [2021-06-05 03:19:28,721 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 945 transitions. Word has length 26 [2021-06-05 03:19:28,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:28,721 INFO L482 AbstractCegarLoop]: Abstraction has 401 states and 945 transitions. [2021-06-05 03:19:28,721 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:28,721 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 945 transitions. [2021-06-05 03:19:28,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:28,722 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:28,722 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:28,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2021-06-05 03:19:28,722 INFO L430 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:28,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:28,722 INFO L82 PathProgramCache]: Analyzing trace with hash -542686380, now seen corresponding path program 382 times [2021-06-05 03:19:28,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:28,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89185894] [2021-06-05 03:19:28,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:28,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:28,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:28,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89185894] [2021-06-05 03:19:28,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89185894] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:28,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:28,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:28,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132182894] [2021-06-05 03:19:28,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:28,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:28,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:28,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:28,785 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 03:19:28,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:28,940 INFO L93 Difference]: Finished difference Result 513 states and 1227 transitions. [2021-06-05 03:19:28,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:28,941 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 03:19:28,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:28,942 INFO L225 Difference]: With dead ends: 513 [2021-06-05 03:19:28,942 INFO L226 Difference]: Without dead ends: 416 [2021-06-05 03:19:28,942 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:28,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-06-05 03:19:28,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 406. [2021-06-05 03:19:28,946 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 03:19:28,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 960 transitions. [2021-06-05 03:19:28,947 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 960 transitions. Word has length 26 [2021-06-05 03:19:28,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:28,947 INFO L482 AbstractCegarLoop]: Abstraction has 406 states and 960 transitions. [2021-06-05 03:19:28,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:28,947 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 960 transitions. [2021-06-05 03:19:28,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:28,947 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:28,948 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:28,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2021-06-05 03:19:28,948 INFO L430 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:28,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:28,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1934830926, now seen corresponding path program 383 times [2021-06-05 03:19:28,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:28,948 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566708290] [2021-06-05 03:19:28,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:29,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:29,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566708290] [2021-06-05 03:19:29,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566708290] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:29,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:29,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:29,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798549312] [2021-06-05 03:19:29,005 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:29,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:29,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:29,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:29,005 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 03:19:29,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:29,174 INFO L93 Difference]: Finished difference Result 532 states and 1254 transitions. [2021-06-05 03:19:29,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:29,174 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 03:19:29,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:29,175 INFO L225 Difference]: With dead ends: 532 [2021-06-05 03:19:29,175 INFO L226 Difference]: Without dead ends: 430 [2021-06-05 03:19:29,175 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:29,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-06-05 03:19:29,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 416. [2021-06-05 03:19:29,178 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 03:19:29,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 974 transitions. [2021-06-05 03:19:29,179 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 974 transitions. Word has length 26 [2021-06-05 03:19:29,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:29,179 INFO L482 AbstractCegarLoop]: Abstraction has 416 states and 974 transitions. [2021-06-05 03:19:29,179 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:29,179 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 974 transitions. [2021-06-05 03:19:29,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:29,179 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:29,179 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 03:19:29,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2021-06-05 03:19:29,179 INFO L430 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:29,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:29,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1603464470, now seen corresponding path program 384 times [2021-06-05 03:19:29,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:29,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527592598] [2021-06-05 03:19:29,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:29,267 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 03:19:29,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:29,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527592598] [2021-06-05 03:19:29,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527592598] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:29,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:29,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:29,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814107293] [2021-06-05 03:19:29,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:29,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:29,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:29,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:29,268 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 03:19:29,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:29,420 INFO L93 Difference]: Finished difference Result 513 states and 1207 transitions. [2021-06-05 03:19:29,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:29,420 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:29,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:29,421 INFO L225 Difference]: With dead ends: 513 [2021-06-05 03:19:29,421 INFO L226 Difference]: Without dead ends: 404 [2021-06-05 03:19:29,421 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:29,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-06-05 03:19:29,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 381. [2021-06-05 03:19:29,424 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 03:19:29,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 898 transitions. [2021-06-05 03:19:29,424 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 898 transitions. Word has length 26 [2021-06-05 03:19:29,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:29,425 INFO L482 AbstractCegarLoop]: Abstraction has 381 states and 898 transitions. [2021-06-05 03:19:29,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:29,425 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 898 transitions. [2021-06-05 03:19:29,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:29,425 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:29,425 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:29,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2021-06-05 03:19:29,425 INFO L430 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:29,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:29,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1538144538, now seen corresponding path program 385 times [2021-06-05 03:19:29,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:29,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648174373] [2021-06-05 03:19:29,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:29,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:29,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648174373] [2021-06-05 03:19:29,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648174373] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:29,480 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:29,480 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:29,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864495188] [2021-06-05 03:19:29,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:29,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:29,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:29,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:29,481 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 03:19:29,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:29,624 INFO L93 Difference]: Finished difference Result 499 states and 1177 transitions. [2021-06-05 03:19:29,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:29,625 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 03:19:29,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:29,625 INFO L225 Difference]: With dead ends: 499 [2021-06-05 03:19:29,625 INFO L226 Difference]: Without dead ends: 381 [2021-06-05 03:19:29,625 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-06-05 03:19:29,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2021-06-05 03:19:29,628 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 03:19:29,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 886 transitions. [2021-06-05 03:19:29,629 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 886 transitions. Word has length 26 [2021-06-05 03:19:29,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:29,629 INFO L482 AbstractCegarLoop]: Abstraction has 381 states and 886 transitions. [2021-06-05 03:19:29,629 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 03:19:29,629 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 886 transitions. [2021-06-05 03:19:29,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:29,629 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:29,629 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 03:19:29,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2021-06-05 03:19:29,629 INFO L430 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:29,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:29,629 INFO L82 PathProgramCache]: Analyzing trace with hash 629893402, now seen corresponding path program 386 times [2021-06-05 03:19:29,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:29,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238590897] [2021-06-05 03:19:29,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:29,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:29,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238590897] [2021-06-05 03:19:29,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238590897] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:29,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:29,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:29,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360293361] [2021-06-05 03:19:29,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:29,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:29,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:29,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:29,686 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 03:19:29,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:29,820 INFO L93 Difference]: Finished difference Result 491 states and 1149 transitions. [2021-06-05 03:19:29,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:29,820 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 03:19:29,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:29,820 INFO L225 Difference]: With dead ends: 491 [2021-06-05 03:19:29,820 INFO L226 Difference]: Without dead ends: 384 [2021-06-05 03:19:29,821 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:29,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-06-05 03:19:29,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 381. [2021-06-05 03:19:29,823 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 03:19:29,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 884 transitions. [2021-06-05 03:19:29,824 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 884 transitions. Word has length 26 [2021-06-05 03:19:29,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:29,824 INFO L482 AbstractCegarLoop]: Abstraction has 381 states and 884 transitions. [2021-06-05 03:19:29,824 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:29,824 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 884 transitions. [2021-06-05 03:19:29,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:29,824 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:29,824 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:29,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2021-06-05 03:19:29,824 INFO L430 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:29,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:29,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1550469368, now seen corresponding path program 387 times [2021-06-05 03:19:29,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:29,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632938259] [2021-06-05 03:19:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:29,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:29,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632938259] [2021-06-05 03:19:29,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632938259] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:29,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:29,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:29,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753668150] [2021-06-05 03:19:29,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:29,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:29,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:29,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:29,881 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 03:19:30,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:30,025 INFO L93 Difference]: Finished difference Result 484 states and 1132 transitions. [2021-06-05 03:19:30,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:30,026 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:30,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:30,026 INFO L225 Difference]: With dead ends: 484 [2021-06-05 03:19:30,026 INFO L226 Difference]: Without dead ends: 369 [2021-06-05 03:19:30,026 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:30,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-06-05 03:19:30,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2021-06-05 03:19:30,029 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 03:19:30,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 860 transitions. [2021-06-05 03:19:30,030 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 860 transitions. Word has length 26 [2021-06-05 03:19:30,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:30,030 INFO L482 AbstractCegarLoop]: Abstraction has 369 states and 860 transitions. [2021-06-05 03:19:30,030 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:30,030 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 860 transitions. [2021-06-05 03:19:30,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:30,030 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:30,030 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:30,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2021-06-05 03:19:30,030 INFO L430 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:30,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:30,030 INFO L82 PathProgramCache]: Analyzing trace with hash 924274646, now seen corresponding path program 388 times [2021-06-05 03:19:30,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:30,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92082804] [2021-06-05 03:19:30,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:30,086 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 03:19:30,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:30,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92082804] [2021-06-05 03:19:30,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92082804] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:30,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:30,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:30,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827243142] [2021-06-05 03:19:30,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:30,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:30,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:30,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:30,086 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 03:19:30,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:30,226 INFO L93 Difference]: Finished difference Result 497 states and 1163 transitions. [2021-06-05 03:19:30,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:30,226 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:30,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:30,227 INFO L225 Difference]: With dead ends: 497 [2021-06-05 03:19:30,227 INFO L226 Difference]: Without dead ends: 349 [2021-06-05 03:19:30,227 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:30,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-06-05 03:19:30,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 345. [2021-06-05 03:19:30,229 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 03:19:30,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 798 transitions. [2021-06-05 03:19:30,230 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 798 transitions. Word has length 26 [2021-06-05 03:19:30,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:30,230 INFO L482 AbstractCegarLoop]: Abstraction has 345 states and 798 transitions. [2021-06-05 03:19:30,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:30,230 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 798 transitions. [2021-06-05 03:19:30,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:30,230 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:30,230 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:30,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2021-06-05 03:19:30,230 INFO L430 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:30,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:30,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1465978148, now seen corresponding path program 389 times [2021-06-05 03:19:30,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:30,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894782492] [2021-06-05 03:19:30,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:30,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:30,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:30,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894782492] [2021-06-05 03:19:30,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894782492] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:30,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:30,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:30,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140250921] [2021-06-05 03:19:30,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:30,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:30,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:30,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:30,287 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 03:19:30,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:30,424 INFO L93 Difference]: Finished difference Result 469 states and 1098 transitions. [2021-06-05 03:19:30,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:30,424 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:30,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:30,424 INFO L225 Difference]: With dead ends: 469 [2021-06-05 03:19:30,424 INFO L226 Difference]: Without dead ends: 357 [2021-06-05 03:19:30,425 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:30,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-06-05 03:19:30,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2021-06-05 03:19:30,427 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 03:19:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 822 transitions. [2021-06-05 03:19:30,428 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 822 transitions. Word has length 26 [2021-06-05 03:19:30,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:30,428 INFO L482 AbstractCegarLoop]: Abstraction has 357 states and 822 transitions. [2021-06-05 03:19:30,430 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:30,430 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 822 transitions. [2021-06-05 03:19:30,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:30,430 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:30,430 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:30,430 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2021-06-05 03:19:30,430 INFO L430 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:30,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:30,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1041532148, now seen corresponding path program 390 times [2021-06-05 03:19:30,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:30,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945028142] [2021-06-05 03:19:30,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:30,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:30,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:30,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945028142] [2021-06-05 03:19:30,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945028142] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:30,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:30,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:30,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182452338] [2021-06-05 03:19:30,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:30,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:30,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:30,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:30,491 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 03:19:30,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:30,634 INFO L93 Difference]: Finished difference Result 474 states and 1113 transitions. [2021-06-05 03:19:30,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:30,634 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:30,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:30,634 INFO L225 Difference]: With dead ends: 474 [2021-06-05 03:19:30,634 INFO L226 Difference]: Without dead ends: 376 [2021-06-05 03:19:30,634 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 03:19:30,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-06-05 03:19:30,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 362. [2021-06-05 03:19:30,637 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 03:19:30,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 837 transitions. [2021-06-05 03:19:30,638 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 837 transitions. Word has length 26 [2021-06-05 03:19:30,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:30,638 INFO L482 AbstractCegarLoop]: Abstraction has 362 states and 837 transitions. [2021-06-05 03:19:30,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:30,638 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 837 transitions. [2021-06-05 03:19:30,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:30,638 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:30,638 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:30,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2021-06-05 03:19:30,638 INFO L430 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:30,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:30,638 INFO L82 PathProgramCache]: Analyzing trace with hash -527396394, now seen corresponding path program 391 times [2021-06-05 03:19:30,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:30,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002425491] [2021-06-05 03:19:30,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:30,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:30,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002425491] [2021-06-05 03:19:30,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002425491] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:30,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:30,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:30,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38641472] [2021-06-05 03:19:30,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:30,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:30,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:30,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:30,694 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 03:19:30,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:30,830 INFO L93 Difference]: Finished difference Result 470 states and 1093 transitions. [2021-06-05 03:19:30,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:30,830 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 03:19:30,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:30,831 INFO L225 Difference]: With dead ends: 470 [2021-06-05 03:19:30,831 INFO L226 Difference]: Without dead ends: 364 [2021-06-05 03:19:30,831 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:30,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-06-05 03:19:30,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 345. [2021-06-05 03:19:30,833 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 03:19:30,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 793 transitions. [2021-06-05 03:19:30,834 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 793 transitions. Word has length 26 [2021-06-05 03:19:30,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:30,834 INFO L482 AbstractCegarLoop]: Abstraction has 345 states and 793 transitions. [2021-06-05 03:19:30,834 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:30,834 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 793 transitions. [2021-06-05 03:19:30,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:30,834 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:30,834 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 03:19:30,834 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2021-06-05 03:19:30,834 INFO L430 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:30,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:30,835 INFO L82 PathProgramCache]: Analyzing trace with hash -273711274, now seen corresponding path program 392 times [2021-06-05 03:19:30,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:30,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522204119] [2021-06-05 03:19:30,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:30,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:30,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522204119] [2021-06-05 03:19:30,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522204119] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:30,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:30,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:30,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11455031] [2021-06-05 03:19:30,891 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:30,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:30,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:30,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:30,891 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 03:19:31,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:31,026 INFO L93 Difference]: Finished difference Result 452 states and 1049 transitions. [2021-06-05 03:19:31,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:31,027 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 03:19:31,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:31,027 INFO L225 Difference]: With dead ends: 452 [2021-06-05 03:19:31,027 INFO L226 Difference]: Without dead ends: 346 [2021-06-05 03:19:31,027 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:31,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-06-05 03:19:31,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 341. [2021-06-05 03:19:31,030 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 03:19:31,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 784 transitions. [2021-06-05 03:19:31,030 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 784 transitions. Word has length 26 [2021-06-05 03:19:31,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:31,030 INFO L482 AbstractCegarLoop]: Abstraction has 341 states and 784 transitions. [2021-06-05 03:19:31,030 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:31,030 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 784 transitions. [2021-06-05 03:19:31,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:31,031 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:31,031 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 03:19:31,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2021-06-05 03:19:31,031 INFO L430 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:31,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:31,031 INFO L82 PathProgramCache]: Analyzing trace with hash -872977896, now seen corresponding path program 393 times [2021-06-05 03:19:31,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:31,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888048476] [2021-06-05 03:19:31,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:31,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:31,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888048476] [2021-06-05 03:19:31,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888048476] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:31,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:31,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:31,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332049560] [2021-06-05 03:19:31,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:31,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:31,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:31,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:31,090 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 03:19:31,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:31,227 INFO L93 Difference]: Finished difference Result 448 states and 1039 transitions. [2021-06-05 03:19:31,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:31,228 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:31,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:31,228 INFO L225 Difference]: With dead ends: 448 [2021-06-05 03:19:31,228 INFO L226 Difference]: Without dead ends: 348 [2021-06-05 03:19:31,228 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:31,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-06-05 03:19:31,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2021-06-05 03:19:31,231 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 03:19:31,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 788 transitions. [2021-06-05 03:19:31,231 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 788 transitions. Word has length 26 [2021-06-05 03:19:31,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:31,231 INFO L482 AbstractCegarLoop]: Abstraction has 344 states and 788 transitions. [2021-06-05 03:19:31,231 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:31,231 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 788 transitions. [2021-06-05 03:19:31,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:31,232 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:31,232 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:31,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2021-06-05 03:19:31,232 INFO L430 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:31,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:31,232 INFO L82 PathProgramCache]: Analyzing trace with hash -480519240, now seen corresponding path program 394 times [2021-06-05 03:19:31,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:31,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050859642] [2021-06-05 03:19:31,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:31,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:31,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:31,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050859642] [2021-06-05 03:19:31,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050859642] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:31,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:31,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:31,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921994930] [2021-06-05 03:19:31,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:31,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:31,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:31,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:31,289 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 03:19:31,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:31,421 INFO L93 Difference]: Finished difference Result 453 states and 1051 transitions. [2021-06-05 03:19:31,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:31,422 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 03:19:31,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:31,422 INFO L225 Difference]: With dead ends: 453 [2021-06-05 03:19:31,422 INFO L226 Difference]: Without dead ends: 352 [2021-06-05 03:19:31,422 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:31,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-06-05 03:19:31,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 345. [2021-06-05 03:19:31,425 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 03:19:31,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 789 transitions. [2021-06-05 03:19:31,425 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 789 transitions. Word has length 26 [2021-06-05 03:19:31,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:31,425 INFO L482 AbstractCegarLoop]: Abstraction has 345 states and 789 transitions. [2021-06-05 03:19:31,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:31,425 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 789 transitions. [2021-06-05 03:19:31,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:31,426 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:31,426 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:31,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2021-06-05 03:19:31,426 INFO L430 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:31,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:31,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1985358058, now seen corresponding path program 395 times [2021-06-05 03:19:31,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:31,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459828599] [2021-06-05 03:19:31,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:31,484 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 03:19:31,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:31,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459828599] [2021-06-05 03:19:31,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459828599] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:31,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:31,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:31,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184558208] [2021-06-05 03:19:31,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:31,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:31,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:31,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:31,484 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 03:19:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:31,621 INFO L93 Difference]: Finished difference Result 452 states and 1045 transitions. [2021-06-05 03:19:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:31,622 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 03:19:31,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:31,622 INFO L225 Difference]: With dead ends: 452 [2021-06-05 03:19:31,622 INFO L226 Difference]: Without dead ends: 349 [2021-06-05 03:19:31,622 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 03:19:31,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-06-05 03:19:31,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 346. [2021-06-05 03:19:31,625 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 03:19:31,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 790 transitions. [2021-06-05 03:19:31,625 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 790 transitions. Word has length 26 [2021-06-05 03:19:31,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:31,625 INFO L482 AbstractCegarLoop]: Abstraction has 346 states and 790 transitions. [2021-06-05 03:19:31,625 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:31,625 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 790 transitions. [2021-06-05 03:19:31,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:31,625 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:31,625 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:31,626 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2021-06-05 03:19:31,626 INFO L430 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:31,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:31,626 INFO L82 PathProgramCache]: Analyzing trace with hash 639440250, now seen corresponding path program 396 times [2021-06-05 03:19:31,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:31,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758071139] [2021-06-05 03:19:31,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:31,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:31,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758071139] [2021-06-05 03:19:31,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758071139] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:31,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:31,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:31,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725739437] [2021-06-05 03:19:31,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:31,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:31,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:31,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:31,689 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 03:19:31,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:31,832 INFO L93 Difference]: Finished difference Result 456 states and 1063 transitions. [2021-06-05 03:19:31,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:31,832 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:31,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:31,833 INFO L225 Difference]: With dead ends: 456 [2021-06-05 03:19:31,833 INFO L226 Difference]: Without dead ends: 358 [2021-06-05 03:19:31,833 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 03:19:31,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-06-05 03:19:31,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 351. [2021-06-05 03:19:31,835 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 03:19:31,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 805 transitions. [2021-06-05 03:19:31,836 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 805 transitions. Word has length 26 [2021-06-05 03:19:31,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:31,836 INFO L482 AbstractCegarLoop]: Abstraction has 351 states and 805 transitions. [2021-06-05 03:19:31,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:31,836 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 805 transitions. [2021-06-05 03:19:31,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:31,836 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:31,836 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:31,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2021-06-05 03:19:31,836 INFO L430 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:31,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:31,837 INFO L82 PathProgramCache]: Analyzing trace with hash -752704296, now seen corresponding path program 397 times [2021-06-05 03:19:31,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:31,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214633247] [2021-06-05 03:19:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:31,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:31,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214633247] [2021-06-05 03:19:31,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214633247] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:31,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:31,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:31,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504789406] [2021-06-05 03:19:31,902 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:31,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:31,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:31,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:31,902 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 03:19:32,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:32,038 INFO L93 Difference]: Finished difference Result 456 states and 1056 transitions. [2021-06-05 03:19:32,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:32,038 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 03:19:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:32,039 INFO L225 Difference]: With dead ends: 456 [2021-06-05 03:19:32,039 INFO L226 Difference]: Without dead ends: 351 [2021-06-05 03:19:32,039 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:32,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-06-05 03:19:32,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 339. [2021-06-05 03:19:32,042 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 03:19:32,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 777 transitions. [2021-06-05 03:19:32,042 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 777 transitions. Word has length 26 [2021-06-05 03:19:32,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:32,042 INFO L482 AbstractCegarLoop]: Abstraction has 339 states and 777 transitions. [2021-06-05 03:19:32,042 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 03:19:32,042 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 777 transitions. [2021-06-05 03:19:32,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:32,042 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:32,042 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 03:19:32,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2021-06-05 03:19:32,043 INFO L430 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:32,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:32,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1846084458, now seen corresponding path program 398 times [2021-06-05 03:19:32,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:32,043 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282650531] [2021-06-05 03:19:32,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:32,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:32,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:32,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282650531] [2021-06-05 03:19:32,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282650531] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:32,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:32,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:32,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436798130] [2021-06-05 03:19:32,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:32,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:32,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:32,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:32,105 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 03:19:32,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:32,234 INFO L93 Difference]: Finished difference Result 462 states and 1071 transitions. [2021-06-05 03:19:32,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:32,235 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:32,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:32,235 INFO L225 Difference]: With dead ends: 462 [2021-06-05 03:19:32,235 INFO L226 Difference]: Without dead ends: 311 [2021-06-05 03:19:32,235 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 03:19:32,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-06-05 03:19:32,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2021-06-05 03:19:32,238 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 03:19:32,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 705 transitions. [2021-06-05 03:19:32,238 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 705 transitions. Word has length 26 [2021-06-05 03:19:32,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:32,238 INFO L482 AbstractCegarLoop]: Abstraction has 311 states and 705 transitions. [2021-06-05 03:19:32,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:32,238 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 705 transitions. [2021-06-05 03:19:32,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:32,238 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:32,239 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:32,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2021-06-05 03:19:32,239 INFO L430 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:32,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:32,239 INFO L82 PathProgramCache]: Analyzing trace with hash 58627458, now seen corresponding path program 399 times [2021-06-05 03:19:32,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:32,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051007928] [2021-06-05 03:19:32,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:32,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:32,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051007928] [2021-06-05 03:19:32,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051007928] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:32,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:32,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:32,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791340042] [2021-06-05 03:19:32,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:32,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:32,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:32,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:32,296 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 03:19:32,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:32,446 INFO L93 Difference]: Finished difference Result 447 states and 1032 transitions. [2021-06-05 03:19:32,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:32,446 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 03:19:32,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:32,446 INFO L225 Difference]: With dead ends: 447 [2021-06-05 03:19:32,446 INFO L226 Difference]: Without dead ends: 326 [2021-06-05 03:19:32,446 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:32,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-06-05 03:19:32,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-06-05 03:19:32,449 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 03:19:32,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 732 transitions. [2021-06-05 03:19:32,449 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 732 transitions. Word has length 26 [2021-06-05 03:19:32,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:32,449 INFO L482 AbstractCegarLoop]: Abstraction has 326 states and 732 transitions. [2021-06-05 03:19:32,449 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 03:19:32,449 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 732 transitions. [2021-06-05 03:19:32,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:32,450 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:32,450 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:32,450 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2021-06-05 03:19:32,450 INFO L430 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:32,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:32,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1510301084, now seen corresponding path program 400 times [2021-06-05 03:19:32,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:32,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660758498] [2021-06-05 03:19:32,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:32,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:32,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:32,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660758498] [2021-06-05 03:19:32,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660758498] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:32,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:32,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:32,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265417806] [2021-06-05 03:19:32,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:32,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:32,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:32,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:32,511 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 03:19:32,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:32,636 INFO L93 Difference]: Finished difference Result 451 states and 1024 transitions. [2021-06-05 03:19:32,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:32,637 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:32,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:32,637 INFO L225 Difference]: With dead ends: 451 [2021-06-05 03:19:32,637 INFO L226 Difference]: Without dead ends: 322 [2021-06-05 03:19:32,637 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 03:19:32,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-06-05 03:19:32,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 314. [2021-06-05 03:19:32,639 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 03:19:32,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 701 transitions. [2021-06-05 03:19:32,640 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 701 transitions. Word has length 26 [2021-06-05 03:19:32,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:32,640 INFO L482 AbstractCegarLoop]: Abstraction has 314 states and 701 transitions. [2021-06-05 03:19:32,640 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:32,640 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 701 transitions. [2021-06-05 03:19:32,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:32,640 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:32,640 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 03:19:32,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2021-06-05 03:19:32,640 INFO L430 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:32,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:32,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1667639142, now seen corresponding path program 401 times [2021-06-05 03:19:32,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:32,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505051896] [2021-06-05 03:19:32,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:32,696 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 03:19:32,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:32,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505051896] [2021-06-05 03:19:32,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505051896] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:32,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:32,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:32,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481330237] [2021-06-05 03:19:32,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:32,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:32,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:32,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:32,697 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 03:19:32,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:32,818 INFO L93 Difference]: Finished difference Result 411 states and 939 transitions. [2021-06-05 03:19:32,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:32,818 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:32,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:32,818 INFO L225 Difference]: With dead ends: 411 [2021-06-05 03:19:32,818 INFO L226 Difference]: Without dead ends: 282 [2021-06-05 03:19:32,819 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:32,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-06-05 03:19:32,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 273. [2021-06-05 03:19:32,821 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 03:19:32,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 610 transitions. [2021-06-05 03:19:32,821 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 610 transitions. Word has length 26 [2021-06-05 03:19:32,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:32,821 INFO L482 AbstractCegarLoop]: Abstraction has 273 states and 610 transitions. [2021-06-05 03:19:32,821 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:32,821 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 610 transitions. [2021-06-05 03:19:32,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:32,821 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:32,821 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:32,821 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2021-06-05 03:19:32,822 INFO L430 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:32,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:32,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1477860122, now seen corresponding path program 402 times [2021-06-05 03:19:32,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:32,822 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588861773] [2021-06-05 03:19:32,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:32,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:32,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588861773] [2021-06-05 03:19:32,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588861773] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:32,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:32,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:32,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151862662] [2021-06-05 03:19:32,878 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:32,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:32,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:32,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:32,879 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 03:19:33,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:33,010 INFO L93 Difference]: Finished difference Result 364 states and 835 transitions. [2021-06-05 03:19:33,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:33,010 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:33,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:33,011 INFO L225 Difference]: With dead ends: 364 [2021-06-05 03:19:33,011 INFO L226 Difference]: Without dead ends: 253 [2021-06-05 03:19:33,011 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-06-05 03:19:33,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 244. [2021-06-05 03:19:33,013 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 03:19:33,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 553 transitions. [2021-06-05 03:19:33,013 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 553 transitions. Word has length 26 [2021-06-05 03:19:33,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:33,013 INFO L482 AbstractCegarLoop]: Abstraction has 244 states and 553 transitions. [2021-06-05 03:19:33,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:33,013 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 553 transitions. [2021-06-05 03:19:33,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:33,014 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:33,014 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 03:19:33,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2021-06-05 03:19:33,014 INFO L430 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:33,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:33,014 INFO L82 PathProgramCache]: Analyzing trace with hash -26978696, now seen corresponding path program 403 times [2021-06-05 03:19:33,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:33,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032241486] [2021-06-05 03:19:33,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:33,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:33,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:33,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032241486] [2021-06-05 03:19:33,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032241486] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:33,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:33,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:33,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815313096] [2021-06-05 03:19:33,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:33,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:33,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:33,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:33,075 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 03:19:33,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:33,210 INFO L93 Difference]: Finished difference Result 350 states and 808 transitions. [2021-06-05 03:19:33,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:33,210 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:33,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:33,210 INFO L225 Difference]: With dead ends: 350 [2021-06-05 03:19:33,210 INFO L226 Difference]: Without dead ends: 250 [2021-06-05 03:19:33,210 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:33,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-06-05 03:19:33,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2021-06-05 03:19:33,212 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 03:19:33,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 552 transitions. [2021-06-05 03:19:33,213 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 552 transitions. Word has length 26 [2021-06-05 03:19:33,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:33,213 INFO L482 AbstractCegarLoop]: Abstraction has 244 states and 552 transitions. [2021-06-05 03:19:33,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:33,213 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 552 transitions. [2021-06-05 03:19:33,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:33,213 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:33,213 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:33,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2021-06-05 03:19:33,213 INFO L430 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:33,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:33,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1697147684, now seen corresponding path program 404 times [2021-06-05 03:19:33,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:33,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051667772] [2021-06-05 03:19:33,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:33,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:33,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051667772] [2021-06-05 03:19:33,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051667772] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:33,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:33,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:33,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659643954] [2021-06-05 03:19:33,282 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:33,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:33,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:33,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:33,282 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 03:19:33,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:33,426 INFO L93 Difference]: Finished difference Result 360 states and 826 transitions. [2021-06-05 03:19:33,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:33,426 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:33,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:33,426 INFO L225 Difference]: With dead ends: 360 [2021-06-05 03:19:33,426 INFO L226 Difference]: Without dead ends: 265 [2021-06-05 03:19:33,426 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 03:19:33,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-06-05 03:19:33,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2021-06-05 03:19:33,429 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 03:19:33,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 579 transitions. [2021-06-05 03:19:33,429 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 579 transitions. Word has length 26 [2021-06-05 03:19:33,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:33,429 INFO L482 AbstractCegarLoop]: Abstraction has 259 states and 579 transitions. [2021-06-05 03:19:33,429 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 03:19:33,429 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 579 transitions. [2021-06-05 03:19:33,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:33,429 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:33,429 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:33,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2021-06-05 03:19:33,429 INFO L430 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:33,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:33,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1205675066, now seen corresponding path program 405 times [2021-06-05 03:19:33,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:33,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293283815] [2021-06-05 03:19:33,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:33,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:33,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293283815] [2021-06-05 03:19:33,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293283815] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:33,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:33,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:33,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422235230] [2021-06-05 03:19:33,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:33,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:33,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:33,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:33,489 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 03:19:33,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:33,621 INFO L93 Difference]: Finished difference Result 368 states and 838 transitions. [2021-06-05 03:19:33,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:33,621 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:33,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:33,622 INFO L225 Difference]: With dead ends: 368 [2021-06-05 03:19:33,622 INFO L226 Difference]: Without dead ends: 268 [2021-06-05 03:19:33,622 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 03:19:33,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-06-05 03:19:33,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 257. [2021-06-05 03:19:33,624 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 03:19:33,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 575 transitions. [2021-06-05 03:19:33,624 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 575 transitions. Word has length 26 [2021-06-05 03:19:33,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:33,624 INFO L482 AbstractCegarLoop]: Abstraction has 257 states and 575 transitions. [2021-06-05 03:19:33,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:33,624 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 575 transitions. [2021-06-05 03:19:33,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:33,624 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:33,624 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 03:19:33,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2021-06-05 03:19:33,625 INFO L430 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:33,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:33,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1087756786, now seen corresponding path program 406 times [2021-06-05 03:19:33,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:33,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626972092] [2021-06-05 03:19:33,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:33,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:33,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:33,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626972092] [2021-06-05 03:19:33,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626972092] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:33,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:33,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:33,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756108162] [2021-06-05 03:19:33,681 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:33,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:33,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:33,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:33,682 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 03:19:33,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:33,812 INFO L93 Difference]: Finished difference Result 366 states and 838 transitions. [2021-06-05 03:19:33,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:33,812 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:33,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:33,813 INFO L225 Difference]: With dead ends: 366 [2021-06-05 03:19:33,813 INFO L226 Difference]: Without dead ends: 247 [2021-06-05 03:19:33,813 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:33,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-06-05 03:19:33,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2021-06-05 03:19:33,815 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 03:19:33,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 553 transitions. [2021-06-05 03:19:33,815 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 553 transitions. Word has length 26 [2021-06-05 03:19:33,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:33,815 INFO L482 AbstractCegarLoop]: Abstraction has 247 states and 553 transitions. [2021-06-05 03:19:33,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:33,815 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 553 transitions. [2021-06-05 03:19:33,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:33,816 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:33,816 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:33,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2021-06-05 03:19:33,816 INFO L430 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:33,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:33,816 INFO L82 PathProgramCache]: Analyzing trace with hash -703725496, now seen corresponding path program 407 times [2021-06-05 03:19:33,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:33,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272655927] [2021-06-05 03:19:33,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:33,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:33,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272655927] [2021-06-05 03:19:33,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272655927] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:33,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:33,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:33,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818047021] [2021-06-05 03:19:33,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:33,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:33,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:33,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:33,886 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 03:19:34,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:34,015 INFO L93 Difference]: Finished difference Result 339 states and 779 transitions. [2021-06-05 03:19:34,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:34,015 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 03:19:34,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:34,016 INFO L225 Difference]: With dead ends: 339 [2021-06-05 03:19:34,016 INFO L226 Difference]: Without dead ends: 230 [2021-06-05 03:19:34,016 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:34,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-06-05 03:19:34,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 217. [2021-06-05 03:19:34,018 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 03:19:34,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 493 transitions. [2021-06-05 03:19:34,018 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 493 transitions. Word has length 26 [2021-06-05 03:19:34,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:34,018 INFO L482 AbstractCegarLoop]: Abstraction has 217 states and 493 transitions. [2021-06-05 03:19:34,018 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 03:19:34,018 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 493 transitions. [2021-06-05 03:19:34,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:34,018 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:34,018 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:34,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2021-06-05 03:19:34,019 INFO L430 AbstractCegarLoop]: === Iteration 410 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:34,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:34,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1474886448, now seen corresponding path program 408 times [2021-06-05 03:19:34,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:34,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178772572] [2021-06-05 03:19:34,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:34,075 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 03:19:34,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:34,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178772572] [2021-06-05 03:19:34,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178772572] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:34,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:34,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:34,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901142887] [2021-06-05 03:19:34,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:34,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:34,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:34,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:34,076 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 03:19:34,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:34,202 INFO L93 Difference]: Finished difference Result 318 states and 736 transitions. [2021-06-05 03:19:34,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:34,202 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:34,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:34,202 INFO L225 Difference]: With dead ends: 318 [2021-06-05 03:19:34,202 INFO L226 Difference]: Without dead ends: 213 [2021-06-05 03:19:34,203 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:34,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-06-05 03:19:34,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-06-05 03:19:34,204 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 03:19:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 485 transitions. [2021-06-05 03:19:34,205 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 485 transitions. Word has length 26 [2021-06-05 03:19:34,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:34,205 INFO L482 AbstractCegarLoop]: Abstraction has 213 states and 485 transitions. [2021-06-05 03:19:34,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:34,205 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 485 transitions. [2021-06-05 03:19:34,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:34,205 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:34,205 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 03:19:34,205 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2021-06-05 03:19:34,205 INFO L430 AbstractCegarLoop]: === Iteration 411 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:34,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:34,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1707700686, now seen corresponding path program 409 times [2021-06-05 03:19:34,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:34,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595514768] [2021-06-05 03:19:34,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:34,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:34,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595514768] [2021-06-05 03:19:34,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595514768] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:34,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:34,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 03:19:34,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619858382] [2021-06-05 03:19:34,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:19:34,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:34,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:19:34,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:19:34,255 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 03:19:34,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:34,354 INFO L93 Difference]: Finished difference Result 318 states and 737 transitions. [2021-06-05 03:19:34,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:19:34,355 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 03:19:34,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:34,355 INFO L225 Difference]: With dead ends: 318 [2021-06-05 03:19:34,355 INFO L226 Difference]: Without dead ends: 215 [2021-06-05 03:19:34,355 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 03:19:34,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-06-05 03:19:34,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2021-06-05 03:19:34,357 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 03:19:34,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 487 transitions. [2021-06-05 03:19:34,357 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 487 transitions. Word has length 26 [2021-06-05 03:19:34,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:34,357 INFO L482 AbstractCegarLoop]: Abstraction has 215 states and 487 transitions. [2021-06-05 03:19:34,357 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 03:19:34,357 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 487 transitions. [2021-06-05 03:19:34,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:34,358 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:34,358 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:34,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2021-06-05 03:19:34,358 INFO L430 AbstractCegarLoop]: === Iteration 412 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:34,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:34,358 INFO L82 PathProgramCache]: Analyzing trace with hash 37531698, now seen corresponding path program 410 times [2021-06-05 03:19:34,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:34,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753377639] [2021-06-05 03:19:34,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:34,414 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 03:19:34,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:34,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753377639] [2021-06-05 03:19:34,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753377639] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:34,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:34,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:34,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929223445] [2021-06-05 03:19:34,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:34,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:34,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:34,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:34,415 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 03:19:34,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:34,544 INFO L93 Difference]: Finished difference Result 325 states and 750 transitions. [2021-06-05 03:19:34,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:34,544 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:34,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:34,544 INFO L225 Difference]: With dead ends: 325 [2021-06-05 03:19:34,544 INFO L226 Difference]: Without dead ends: 227 [2021-06-05 03:19:34,545 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:34,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-06-05 03:19:34,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 220. [2021-06-05 03:19:34,546 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 03:19:34,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 499 transitions. [2021-06-05 03:19:34,547 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 499 transitions. Word has length 26 [2021-06-05 03:19:34,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:34,547 INFO L482 AbstractCegarLoop]: Abstraction has 220 states and 499 transitions. [2021-06-05 03:19:34,547 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:34,547 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 499 transitions. [2021-06-05 03:19:34,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:34,547 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:34,547 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:34,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2021-06-05 03:19:34,547 INFO L430 AbstractCegarLoop]: === Iteration 413 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:34,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:34,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1354612848, now seen corresponding path program 411 times [2021-06-05 03:19:34,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:34,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412392126] [2021-06-05 03:19:34,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:34,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:34,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412392126] [2021-06-05 03:19:34,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412392126] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:34,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:34,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:34,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885404868] [2021-06-05 03:19:34,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:34,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:34,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:34,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:34,604 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 03:19:34,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:34,725 INFO L93 Difference]: Finished difference Result 331 states and 761 transitions. [2021-06-05 03:19:34,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:34,725 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:34,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:34,726 INFO L225 Difference]: With dead ends: 331 [2021-06-05 03:19:34,726 INFO L226 Difference]: Without dead ends: 220 [2021-06-05 03:19:34,726 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:34,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-06-05 03:19:34,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2021-06-05 03:19:34,728 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 03:19:34,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 492 transitions. [2021-06-05 03:19:34,728 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 492 transitions. Word has length 26 [2021-06-05 03:19:34,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:34,728 INFO L482 AbstractCegarLoop]: Abstraction has 218 states and 492 transitions. [2021-06-05 03:19:34,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:34,728 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 492 transitions. [2021-06-05 03:19:34,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:34,728 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:34,728 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 03:19:34,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2021-06-05 03:19:34,728 INFO L430 AbstractCegarLoop]: === Iteration 414 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:34,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:34,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1023246392, now seen corresponding path program 412 times [2021-06-05 03:19:34,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:34,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904671024] [2021-06-05 03:19:34,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:34,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:34,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:34,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904671024] [2021-06-05 03:19:34,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904671024] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:34,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:34,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:34,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32869010] [2021-06-05 03:19:34,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:34,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:34,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:34,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:34,785 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 03:19:34,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:34,909 INFO L93 Difference]: Finished difference Result 313 states and 725 transitions. [2021-06-05 03:19:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:34,909 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:34,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:34,910 INFO L225 Difference]: With dead ends: 313 [2021-06-05 03:19:34,910 INFO L226 Difference]: Without dead ends: 199 [2021-06-05 03:19:34,910 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:34,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-06-05 03:19:34,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2021-06-05 03:19:34,911 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 03:19:34,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 451 transitions. [2021-06-05 03:19:34,912 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 451 transitions. Word has length 26 [2021-06-05 03:19:34,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:34,912 INFO L482 AbstractCegarLoop]: Abstraction has 196 states and 451 transitions. [2021-06-05 03:19:34,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:34,912 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 451 transitions. [2021-06-05 03:19:34,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:34,912 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:34,912 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:34,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2021-06-05 03:19:34,912 INFO L430 AbstractCegarLoop]: === Iteration 415 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:34,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:34,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1170207830, now seen corresponding path program 413 times [2021-06-05 03:19:34,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:34,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877161174] [2021-06-05 03:19:34,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:34,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:34,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877161174] [2021-06-05 03:19:34,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877161174] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:34,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:34,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:34,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542922731] [2021-06-05 03:19:34,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:34,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:34,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:34,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:34,969 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 03:19:35,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:35,091 INFO L93 Difference]: Finished difference Result 296 states and 693 transitions. [2021-06-05 03:19:35,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:35,091 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:35,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:35,092 INFO L225 Difference]: With dead ends: 296 [2021-06-05 03:19:35,092 INFO L226 Difference]: Without dead ends: 191 [2021-06-05 03:19:35,092 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:35,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-06-05 03:19:35,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-06-05 03:19:35,093 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 03:19:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 441 transitions. [2021-06-05 03:19:35,094 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 441 transitions. Word has length 26 [2021-06-05 03:19:35,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:35,094 INFO L482 AbstractCegarLoop]: Abstraction has 191 states and 441 transitions. [2021-06-05 03:19:35,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:35,094 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 441 transitions. [2021-06-05 03:19:35,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:35,094 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:35,094 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 03:19:35,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2021-06-05 03:19:35,094 INFO L430 AbstractCegarLoop]: === Iteration 416 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:35,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:35,094 INFO L82 PathProgramCache]: Analyzing trace with hash -499961158, now seen corresponding path program 414 times [2021-06-05 03:19:35,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:35,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873871111] [2021-06-05 03:19:35,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:35,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:35,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873871111] [2021-06-05 03:19:35,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873871111] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:35,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:35,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:35,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959502594] [2021-06-05 03:19:35,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:35,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:35,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:35,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:35,155 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 03:19:35,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:35,272 INFO L93 Difference]: Finished difference Result 294 states and 685 transitions. [2021-06-05 03:19:35,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:35,272 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 03:19:35,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:35,273 INFO L225 Difference]: With dead ends: 294 [2021-06-05 03:19:35,273 INFO L226 Difference]: Without dead ends: 181 [2021-06-05 03:19:35,273 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 03:19:35,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-06-05 03:19:35,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-06-05 03:19:35,274 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 03:19:35,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 415 transitions. [2021-06-05 03:19:35,275 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 415 transitions. Word has length 26 [2021-06-05 03:19:35,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:35,275 INFO L482 AbstractCegarLoop]: Abstraction has 181 states and 415 transitions. [2021-06-05 03:19:35,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:35,275 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 415 transitions. [2021-06-05 03:19:35,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:35,275 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:35,275 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 03:19:35,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2021-06-05 03:19:35,275 INFO L430 AbstractCegarLoop]: === Iteration 417 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:35,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:35,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1892105704, now seen corresponding path program 415 times [2021-06-05 03:19:35,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:35,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570523037] [2021-06-05 03:19:35,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:35,347 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 03:19:35,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:35,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570523037] [2021-06-05 03:19:35,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570523037] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:35,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:35,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:35,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273607841] [2021-06-05 03:19:35,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:35,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:35,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:35,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:35,348 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 03:19:35,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:35,462 INFO L93 Difference]: Finished difference Result 282 states and 659 transitions. [2021-06-05 03:19:35,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:35,463 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:35,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:35,463 INFO L225 Difference]: With dead ends: 282 [2021-06-05 03:19:35,463 INFO L226 Difference]: Without dead ends: 179 [2021-06-05 03:19:35,463 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:35,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-06-05 03:19:35,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-06-05 03:19:35,465 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 03:19:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 411 transitions. [2021-06-05 03:19:35,465 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 411 transitions. Word has length 26 [2021-06-05 03:19:35,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:35,465 INFO L482 AbstractCegarLoop]: Abstraction has 179 states and 411 transitions. [2021-06-05 03:19:35,465 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 03:19:35,465 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 411 transitions. [2021-06-05 03:19:35,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 03:19:35,465 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:35,465 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 03:19:35,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2021-06-05 03:19:35,465 INFO L430 AbstractCegarLoop]: === Iteration 418 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:35,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:35,466 INFO L82 PathProgramCache]: Analyzing trace with hash 493461030, now seen corresponding path program 416 times [2021-06-05 03:19:35,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:35,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017905501] [2021-06-05 03:19:35,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:35,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:35,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017905501] [2021-06-05 03:19:35,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017905501] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:19:35,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:19:35,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 03:19:35,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932813448] [2021-06-05 03:19:35,528 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 03:19:35,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:35,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 03:19:35,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:35,528 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 03:19:35,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:35,623 INFO L93 Difference]: Finished difference Result 178 states and 410 transitions. [2021-06-05 03:19:35,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 03:19:35,623 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 03:19:35,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:35,623 INFO L225 Difference]: With dead ends: 178 [2021-06-05 03:19:35,623 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 03:19:35,623 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 03:19:35,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 03:19:35,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 03:19:35,624 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 03:19:35,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 03:19:35,624 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-06-05 03:19:35,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:35,624 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 03:19:35,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:35,624 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 03:19:35,624 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 03:19:35,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2021-06-05 03:19:35,625 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 03:19:35,627 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 03:19:35 BasicIcfg [2021-06-05 03:19:35,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 03:19:35,627 INFO L168 Benchmark]: Toolchain (without parser) took 98302.33 ms. Allocated memory was 388.0 MB in the beginning and 570.4 MB in the end (delta: 182.5 MB). Free memory was 367.7 MB in the beginning and 520.1 MB in the end (delta: -152.4 MB). Peak memory consumption was 32.0 MB. Max. memory is 16.0 GB. [2021-06-05 03:19:35,628 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 388.0 MB. Free memory is still 368.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 03:19:35,628 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.01 ms. Allocated memory is still 388.0 MB. Free memory was 367.6 MB in the beginning and 366.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 03:19:35,628 INFO L168 Benchmark]: Boogie Preprocessor took 9.97 ms. Allocated memory is still 388.0 MB. Free memory was 366.2 MB in the beginning and 365.3 MB in the end (delta: 836.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 03:19:35,628 INFO L168 Benchmark]: RCFGBuilder took 177.97 ms. Allocated memory is still 388.0 MB. Free memory was 365.3 MB in the beginning and 356.3 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-06-05 03:19:35,628 INFO L168 Benchmark]: TraceAbstraction took 98089.78 ms. Allocated memory was 388.0 MB in the beginning and 570.4 MB in the end (delta: 182.5 MB). Free memory was 355.9 MB in the beginning and 520.1 MB in the end (delta: -164.3 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.0 GB. [2021-06-05 03:19:35,628 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 0.14 ms. Allocated memory is still 388.0 MB. Free memory is still 368.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.01 ms. Allocated memory is still 388.0 MB. Free memory was 367.6 MB in the beginning and 366.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.97 ms. Allocated memory is still 388.0 MB. Free memory was 366.2 MB in the beginning and 365.3 MB in the end (delta: 836.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 177.97 ms. Allocated memory is still 388.0 MB. Free memory was 365.3 MB in the beginning and 356.3 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 98089.78 ms. Allocated memory was 388.0 MB in the beginning and 570.4 MB in the end (delta: 182.5 MB). Free memory was 355.9 MB in the beginning and 520.1 MB in the end (delta: -164.3 MB). Peak memory consumption was 19.4 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: 98003.7ms, OverallIterations: 418, TraceHistogramMax: 1, EmptinessCheckTime: 494.6ms, AutomataDifference: 65836.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 178.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33617 SDtfs, 21628 SDslu, 185475 SDs, 0 SdLazy, 149233 SolverSat, 3871 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47855.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3750 GetRequests, 109 SyntacticMatches, 416 SemanticMatches, 3225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20314.0ms 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: 5411.0ms AutomataMinimizationTime, 418 MinimizatonAttempts, 33805 StatesRemovedByMinimization, 402 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 117.7ms SsaConstructionTime, 375.2ms SatisfiabilityAnalysisTime, 24463.8ms 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...